Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
diff --git a/docs/dyn/cloudbuild_v1.projects.triggers.html b/docs/dyn/cloudbuild_v1.projects.triggers.html
index 34227ce..a218689 100644
--- a/docs/dyn/cloudbuild_v1.projects.triggers.html
+++ b/docs/dyn/cloudbuild_v1.projects.triggers.html
@@ -72,27 +72,33 @@
 
 </style>
 
-<h1><a href="cloudbuild_v1.html">Google Cloud Container Builder API</a> . <a href="cloudbuild_v1.projects.html">projects</a> . <a href="cloudbuild_v1.projects.triggers.html">triggers</a></h1>
+<h1><a href="cloudbuild_v1.html">Cloud Build API</a> . <a href="cloudbuild_v1.projects.html">projects</a> . <a href="cloudbuild_v1.projects.triggers.html">triggers</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
   <code><a href="#create">create(projectId, body, x__xgafv=None)</a></code></p>
-<p class="firstline">Creates a new BuildTrigger.</p>
+<p class="firstline">Creates a new `BuildTrigger`.</p>
 <p class="toc_element">
   <code><a href="#delete">delete(projectId, triggerId, x__xgafv=None)</a></code></p>
-<p class="firstline">Deletes an BuildTrigger by its project ID and trigger ID.</p>
+<p class="firstline">Deletes a `BuildTrigger` by its project ID and trigger ID.</p>
 <p class="toc_element">
   <code><a href="#get">get(projectId, triggerId, x__xgafv=None)</a></code></p>
-<p class="firstline">Gets information about a BuildTrigger.</p>
+<p class="firstline">Returns information about a `BuildTrigger`.</p>
 <p class="toc_element">
-  <code><a href="#list">list(projectId, x__xgafv=None)</a></code></p>
-<p class="firstline">Lists existing BuildTrigger.</p>
+  <code><a href="#list">list(projectId, pageSize=None, pageToken=None, x__xgafv=None)</a></code></p>
+<p class="firstline">Lists existing `BuildTrigger`s.</p>
+<p class="toc_element">
+  <code><a href="#list_next">list_next(previous_request, previous_response)</a></code></p>
+<p class="firstline">Retrieves the next page of results.</p>
 <p class="toc_element">
   <code><a href="#patch">patch(projectId, triggerId, body, x__xgafv=None)</a></code></p>
-<p class="firstline">Updates an BuildTrigger by its project ID and trigger ID.</p>
+<p class="firstline">Updates a `BuildTrigger` by its project ID and trigger ID.</p>
+<p class="toc_element">
+  <code><a href="#run">run(projectId, triggerId, body, x__xgafv=None)</a></code></p>
+<p class="firstline">Runs a `BuildTrigger` at a particular source revision.</p>
 <h3>Method Details</h3>
 <div class="method">
     <code class="details" id="create">create(projectId, body, x__xgafv=None)</code>
-  <pre>Creates a new BuildTrigger.
+  <pre>Creates a new `BuildTrigger`.
 
 This API is experimental.
 
@@ -102,24 +108,549 @@
     The object takes the form of:
 
 { # Configuration for an automated build in response to source repository
+    # changes.
+  "github": { # GitHubEventsConfig describes the configuration of a trigger that creates a # GitHubEventsConfig describes the configuration of a trigger that creates
+      # a build whenever a GitHub event is received.
+      # build whenever a GitHub event is received.
+      #
+      # This message is experimental.
+    "name": "A String", # Name of the repository.
+    "pullRequest": { # PullRequestFilter contains filter properties for matching GitHub Pull # filter to match changes in pull requests.
+        # Requests.
+      "commentControl": "A String", # Whether to block builds on a "/gcbrun" comment from a repository owner or
+          # collaborator.
+      "branch": "A String", # Regex of branches to match.
+          #
+          # The syntax of the regular expressions accepted is the syntax accepted by
+          # RE2 and described at https://github.com/google/re2/wiki/Syntax
+    },
+    "owner": "A String", # Owner of the repository.
+    "push": { # Push contains filter properties for matching GitHub git pushes. # filter to match changes in refs like branches, tags.
+      "tag": "A String", # Regexes of tags to match.
+          #
+          # The syntax of the regular expressions accepted is the syntax accepted by
+          # RE2 and described at https://github.com/google/re2/wiki/Syntax
+      "branch": "A String", # Regexes of branches to match.
+          #
+          # The syntax of the regular expressions accepted is the syntax accepted by
+          # RE2 and described at https://github.com/google/re2/wiki/Syntax
+    },
+    "installationId": "A String", # The installationID that emmits the GitHub event.
+    "checkSuite": { # A CheckSuiteFilter is a filter that indicates that we should build on all # Output only. Indicates that a build was generated from a check suite
+        # event.
+        # check suite events.
+    },
+  },
+  "description": "A String", # Human-readable description of this trigger.
+  "tags": [ # Tags for annotation of a `BuildTrigger`
+    "A String",
+  ],
+  "ignoredFiles": [ # ignored_files and included_files are file glob matches using
+      # http://godoc/pkg/path/filepath#Match extended with support for "**".
+      # 
+      # If ignored_files and changed files are both empty, then they are
+      # not used to determine whether or not to trigger a build.
+      # 
+      # If ignored_files is not empty, then we ignore any files that match
+      # any of the ignored_file globs. If the change has no files that are
+      # outside of the ignored_files globs, then we do not trigger a build.
+    "A String",
+  ],
+  "filename": "A String", # Path, from the source root, to a file whose contents is used for the
+      # template.
+  "createTime": "A String", # Output only. Time when the trigger was created.
+  "substitutions": { # Substitutions data for Build resource.
+    "a_key": "A String",
+  },
+  "disabled": True or False, # If true, the trigger will never result in a build.
+  "build": { # A build resource in the Cloud Build API. # Contents of the build template.
+      #
+      # At a high level, a `Build` describes where to find source code, how to build
+      # it (for example, the builder image to run on the source), and where to store
+      # the built artifacts.
+      #
+      # Fields can include the following variables, which will be expanded when the
+      # build is created:
+      #
+      # - $PROJECT_ID: the project ID of the build.
+      # - $BUILD_ID: the autogenerated ID of the build.
+      # - $REPO_NAME: the source repository name specified by RepoSource.
+      # - $BRANCH_NAME: the branch name specified by RepoSource.
+      # - $TAG_NAME: the tag name specified by RepoSource.
+      # - $REVISION_ID or $COMMIT_SHA: the commit SHA specified by RepoSource or
+      #   resolved from the specified branch or tag.
+      # - $SHORT_SHA: first 7 characters of $REVISION_ID or $COMMIT_SHA.
+    "results": { # Artifacts created by the build pipeline. # Output only. Results of the build.
+      "buildStepOutputs": [ # List of build step outputs, produced by builder images, in the order
+          # corresponding to build step indices.
+          #
+          # [Cloud Builders](https://cloud.google.com/cloud-build/docs/cloud-builders)
+          # can produce this output by writing to `$BUILDER_OUTPUT/output`.
+          # Only the first 4KB of data is stored.
+        "A String",
+      ],
+      "artifactTiming": { # Start and end times for a build execution phase. # Time to push all non-container artifacts.
+        "endTime": "A String", # End of time span.
+        "startTime": "A String", # Start of time span.
+      },
+      "artifactManifest": "A String", # Path to the artifact manifest. Only populated when artifacts are uploaded.
+      "images": [ # Container images that were built as a part of the build.
+        { # An image built by the pipeline.
+          "pushTiming": { # Start and end times for a build execution phase. # Output only. Stores timing information for pushing the specified image.
+            "endTime": "A String", # End of time span.
+            "startTime": "A String", # Start of time span.
+          },
+          "name": "A String", # Name used to push the container image to Google Container Registry, as
+              # presented to `docker push`.
+          "digest": "A String", # Docker Registry 2.0 digest.
+        },
+      ],
+      "buildStepImages": [ # List of build step digests, in the order corresponding to build step
+          # indices.
+        "A String",
+      ],
+      "numArtifacts": "A String", # Number of artifacts uploaded. Only populated when artifacts are uploaded.
+    },
+    "sourceProvenance": { # Provenance of the source. Ways to find the original source, or verify that # Output only. A permanent fixed identifier for source.
+        # some source was used for this build.
+      "resolvedRepoSource": { # Location of the source in a Google Cloud Source Repository. # A copy of the build's `source.repo_source`, if exists, with any
+          # revisions resolved.
+        "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+            # project ID requesting the build is assumed.
+        "commitSha": "A String", # Explicit commit SHA to build.
+        "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+            # assumed.
+        "tagName": "A String", # Name of the tag to build.
+        "branchName": "A String", # Name of the branch to build.
+        "dir": "A String", # Directory, relative to the source root, in which to run the build.
+            #
+            # This must be a relative path. If a step's `dir` is specified and is an
+            # absolute path, this value is ignored for that step's execution.
+      },
+      "fileHashes": { # Output only. Hash(es) of the build source, which can be used to verify that
+          # the original source integrity was maintained in the build. Note that
+          # `FileHashes` will only be populated if `BuildOptions` has requested a
+          # `SourceProvenanceHash`.
+          #
+          # The keys to this map are file paths used as build source and the values
+          # contain the hash values for those files.
+          #
+          # If the build source came in a single package such as a gzipped tarfile
+          # (`.tar.gz`), the `FileHash` will be for the single path to that file.
+        "a_key": { # Container message for hashes of byte content of files, used in
+            # SourceProvenance messages to verify integrity of source input to the build.
+          "fileHash": [ # Collection of file hashes.
+            { # Container message for hash values.
+              "type": "A String", # The type of hash that was performed.
+              "value": "A String", # The hash value.
+            },
+          ],
+        },
+      },
+      "resolvedStorageSource": { # Location of the source in an archive file in Google Cloud Storage. # A copy of the build's `source.storage_source`, if exists, with any
+          # generations resolved.
+        "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
+            # omitted, the latest generation will be used.
+        "object": "A String", # Google Cloud Storage object containing the source.
+            #
+            # This object must be a gzipped archive file (`.tar.gz`) containing source to
+            # build.
+        "bucket": "A String", # Google Cloud Storage bucket containing the source (see
+            # [Bucket Name
+            # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+      },
+    },
+    "images": [ # A list of images to be pushed upon the successful completion of all build
+        # steps.
+        #
+        # The images are pushed using the builder service account's credentials.
+        #
+        # The digests of the pushed images will be stored in the `Build` resource's
+        # results field.
+        #
+        # If any of the images fail to be pushed, the build status is marked
+        # `FAILURE`.
+      "A String",
+    ],
+    "id": "A String", # Output only. Unique identifier of the build.
+    "artifacts": { # Artifacts produced by a build that should be uploaded upon # Artifacts produced by the build that should be uploaded upon
+        # successful completion of all build steps.
+        # successful completion of all build steps.
+      "images": [ # A list of images to be pushed upon the successful completion of all build
+          # steps.
+          #
+          # The images will be pushed using the builder service account's credentials.
+          #
+          # The digests of the pushed images will be stored in the Build resource's
+          # results field.
+          #
+          # If any of the images fail to be pushed, the build is marked FAILURE.
+        "A String",
+      ],
+      "objects": { # Files in the workspace to upload to Cloud Storage upon successful # A list of objects to be uploaded to Cloud Storage upon successful
+          # completion of all build steps.
+          #
+          # Files in the workspace matching specified paths globs will be uploaded to
+          # the specified Cloud Storage location using the builder service account's
+          # credentials.
+          #
+          # The location and generation of the uploaded objects will be stored in the
+          # Build resource's results field.
+          #
+          # If any objects fail to be pushed, the build is marked FAILURE.
+          # completion of all build steps.
+        "timing": { # Start and end times for a build execution phase. # Output only. Stores timing information for pushing all artifact objects.
+          "endTime": "A String", # End of time span.
+          "startTime": "A String", # Start of time span.
+        },
+        "paths": [ # Path globs used to match files in the build's workspace.
+          "A String",
+        ],
+        "location": "A String", # Cloud Storage bucket and optional object path, in the form
+            # "gs://bucket/path/to/somewhere/". (see [Bucket Name
+            # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+            #
+            # Files in the workspace matching any path pattern will be uploaded to
+            # Cloud Storage with this location as a prefix.
+      },
+    },
+    "projectId": "A String", # Output only. ID of the project.
+    "substitutions": { # Substitutions data for `Build` resource.
+      "a_key": "A String",
+    },
+    "source": { # Location of the source in a supported storage service. # The location of the source files to build.
+      "repoSource": { # Location of the source in a Google Cloud Source Repository. # If provided, get the source from this location in a Cloud Source
+          # Repository.
+        "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+            # project ID requesting the build is assumed.
+        "commitSha": "A String", # Explicit commit SHA to build.
+        "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+            # assumed.
+        "tagName": "A String", # Name of the tag to build.
+        "branchName": "A String", # Name of the branch to build.
+        "dir": "A String", # Directory, relative to the source root, in which to run the build.
+            #
+            # This must be a relative path. If a step's `dir` is specified and is an
+            # absolute path, this value is ignored for that step's execution.
+      },
+      "storageSource": { # Location of the source in an archive file in Google Cloud Storage. # If provided, get the source from this location in Google Cloud Storage.
+        "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
+            # omitted, the latest generation will be used.
+        "object": "A String", # Google Cloud Storage object containing the source.
+            #
+            # This object must be a gzipped archive file (`.tar.gz`) containing source to
+            # build.
+        "bucket": "A String", # Google Cloud Storage bucket containing the source (see
+            # [Bucket Name
+            # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+      },
+    },
+    "status": "A String", # Output only. Status of the build.
+    "tags": [ # Tags for annotation of a `Build`. These are not docker tags.
+      "A String",
+    ],
+    "statusDetail": "A String", # Output only. Customer-readable message about the current status.
+    "startTime": "A String", # Output only. Time at which execution of the build was started.
+    "timing": { # Output only. Stores timing information for phases of the build. Valid keys
+        # are:
+        #
+        # * BUILD: time to execute all build steps
+        # * PUSH: time to push all specified images.
+        # * FETCHSOURCE: time to fetch source.
+        #
+        # If the build does not specify source or images,
+        # these keys will not be included.
+      "a_key": { # Start and end times for a build execution phase.
+        "endTime": "A String", # End of time span.
+        "startTime": "A String", # Start of time span.
+      },
+    },
+    "createTime": "A String", # Output only. Time at which the request to create the build was received.
+    "finishTime": "A String", # Output only. Time at which execution of the build was finished.
+        #
+        # The difference between finish_time and start_time is the duration of the
+        # build's execution.
+    "buildTriggerId": "A String", # Output only. The ID of the `BuildTrigger` that triggered this build, if it
+        # was triggered automatically.
+    "secrets": [ # Secrets to decrypt using Cloud Key Management Service.
+      { # Pairs a set of secret environment variables containing encrypted
+          # values with the Cloud KMS key to use to decrypt the value.
+        "secretEnv": { # Map of environment variable name to its encrypted value.
+            #
+            # Secret environment variables must be unique across all of a build's
+            # secrets, and must be used by at least one build step. Values can be at most
+            # 64 KB in size. There can be at most 100 secret values across all of a
+            # build's secrets.
+          "a_key": "A String",
+        },
+        "kmsKeyName": "A String", # Cloud KMS key name to use to decrypt these envs.
+      },
+    ],
+    "steps": [ # Required. The operations to be performed on the workspace.
+      { # A step in the build pipeline.
+        "status": "A String", # Output only. Status of the build step. At this time, build step status is
+            # only updated on build completion; step status is not updated in real-time
+            # as the build progresses.
+        "args": [ # A list of arguments that will be presented to the step when it is started.
+            #
+            # If the image used to run the step's container has an entrypoint, the `args`
+            # are used as arguments to that entrypoint. If the image does not define
+            # an entrypoint, the first element in args is used as the entrypoint,
+            # and the remainder will be used as arguments.
+          "A String",
+        ],
+        "env": [ # A list of environment variable definitions to be used when running a step.
+            #
+            # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
+            # being given the value "VALUE".
+          "A String",
+        ],
+        "waitFor": [ # The ID(s) of the step(s) that this build step depends on.
+            # This build step will not start until all the build steps in `wait_for`
+            # have completed successfully. If `wait_for` is empty, this build step will
+            # start when all previous build steps in the `Build.Steps` list have
+            # completed successfully.
+          "A String",
+        ],
+        "timeout": "A String", # Time limit for executing this build step. If not defined, the step has no
+            # time limit and will be allowed to continue to run until either it completes
+            # or the build itself times out.
+        "secretEnv": [ # A list of environment variables which are encrypted using a Cloud Key
+            # Management Service crypto key. These values must be specified in the
+            # build's `Secret`.
+          "A String",
+        ],
+        "entrypoint": "A String", # Entrypoint to be used instead of the build step image's default entrypoint.
+            # If unset, the image's default entrypoint is used.
+        "volumes": [ # List of volumes to mount into the build step.
+            #
+            # Each volume is created as an empty volume prior to execution of the
+            # build step. Upon completion of the build, volumes and their contents are
+            # discarded.
+            #
+            # Using a named volume in only one step is not valid as it is indicative
+            # of a build request with an incorrect configuration.
+          { # Volume describes a Docker container volume which is mounted into build steps
+              # in order to persist files across build step execution.
+            "path": "A String", # Path at which to mount the volume.
+                #
+                # Paths must be absolute and cannot conflict with other volume paths on the
+                # same build step or with certain reserved volume paths.
+            "name": "A String", # Name of the volume to mount.
+                #
+                # Volume names must be unique per build step and must be valid names for
+                # Docker volumes. Each named volume must be used by at least two build steps.
+          },
+        ],
+        "timing": { # Start and end times for a build execution phase. # Output only. Stores timing information for executing this build step.
+          "endTime": "A String", # End of time span.
+          "startTime": "A String", # Start of time span.
+        },
+        "pullTiming": { # Start and end times for a build execution phase. # Output only. Stores timing information for pulling this build step's
+            # builder image only.
+          "endTime": "A String", # End of time span.
+          "startTime": "A String", # Start of time span.
+        },
+        "id": "A String", # Unique identifier for this build step, used in `wait_for` to
+            # reference this build step as a dependency.
+        "dir": "A String", # Working directory to use when running this step's container.
+            #
+            # If this value is a relative path, it is relative to the build's working
+            # directory. If this value is absolute, it may be outside the build's working
+            # directory, in which case the contents of the path may not be persisted
+            # across build step executions, unless a `volume` for that path is specified.
+            #
+            # If the build specifies a `RepoSource` with `dir` and a step with a `dir`,
+            # which specifies an absolute path, the `RepoSource` `dir` is ignored for
+            # the step's execution.
+        "name": "A String", # Required. The name of the container image that will run this particular
+            # build step.
+            #
+            # If the image is available in the host's Docker daemon's cache, it
+            # will be run directly. If not, the host will attempt to pull the image
+            # first, using the builder service account's credentials if necessary.
+            #
+            # The Docker daemon's cache will already have the latest versions of all of
+            # the officially supported build steps
+            # ([https://github.com/GoogleCloudPlatform/cloud-builders](https://github.com/GoogleCloudPlatform/cloud-builders)).
+            # The Docker daemon will also have cached many of the layers for some popular
+            # images, like "ubuntu", "debian", but they will be refreshed at the time you
+            # attempt to use them.
+            #
+            # If you built an image in a previous build step, it will be stored in the
+            # host's Docker daemon's cache and is available to use as the name for a
+            # later build step.
+      },
+    ],
+    "timeout": "A String", # Amount of time that this build should be allowed to run, to second
+        # granularity. If this amount of time elapses, work on the build will cease
+        # and the build status will be `TIMEOUT`.
+        #
+        # Default time is ten minutes.
+    "logsBucket": "A String", # Google Cloud Storage bucket where logs should be written (see
+        # [Bucket Name
+        # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+        # Logs file names will be of the format `${logs_bucket}/log-${build_id}.txt`.
+    "options": { # Optional arguments to enable specific features of builds. # Special options for this build.
+      "substitutionOption": "A String", # Option to specify behavior when there is an error in the substitution
+          # checks.
+      "logging": "A String", # Option to specify the logging mode, which determines where the logs are
+          # stored.
+      "volumes": [ # Global list of volumes to mount for ALL build steps
+          #
+          # Each volume is created as an empty volume prior to starting the build
+          # process. Upon completion of the build, volumes and their contents are
+          # discarded. Global volume names and paths cannot conflict with the volumes
+          # defined a build step.
+          #
+          # Using a global volume in a build with only one step is not valid as
+          # it is indicative of a build request with an incorrect configuration.
+        { # Volume describes a Docker container volume which is mounted into build steps
+            # in order to persist files across build step execution.
+          "path": "A String", # Path at which to mount the volume.
+              #
+              # Paths must be absolute and cannot conflict with other volume paths on the
+              # same build step or with certain reserved volume paths.
+          "name": "A String", # Name of the volume to mount.
+              #
+              # Volume names must be unique per build step and must be valid names for
+              # Docker volumes. Each named volume must be used by at least two build steps.
+        },
+      ],
+      "workerPool": "A String", # Option to specify a `WorkerPool` for the build. User specifies the pool
+          # with the format "[WORKERPOOL_PROJECT_ID]/[WORKERPOOL_NAME]".
+          # This is an experimental field.
+      "logStreamingOption": "A String", # Option to define build log streaming behavior to Google Cloud
+          # Storage.
+      "sourceProvenanceHash": [ # Requested hash for SourceProvenance.
+        "A String",
+      ],
+      "secretEnv": [ # A list of global environment variables, which are encrypted using a Cloud
+          # Key Management Service crypto key. These values must be specified in the
+          # build's `Secret`. These variables will be available to all build steps
+          # in this build.
+        "A String",
+      ],
+      "diskSizeGb": "A String", # Requested disk size for the VM that runs the build. Note that this is *NOT*
+          # "disk free"; some of the space will be used by the operating system and
+          # build utilities. Also note that this is the minimum disk size that will be
+          # allocated for the build -- the build may run with a larger disk than
+          # requested. At present, the maximum disk size is 1000GB; builds that request
+          # more than the maximum are rejected with an error.
+      "env": [ # A list of global environment variable definitions that will exist for all
+          # build steps in this build. If a variable is defined in both globally and in
+          # a build step, the variable will use the build step value.
+          #
+          # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
+          # being given the value "VALUE".
+        "A String",
+      ],
+      "requestedVerifyOption": "A String", # Requested verifiability options.
+      "machineType": "A String", # Compute Engine machine type on which to run the build.
+    },
+    "logUrl": "A String", # Output only. URL to logs for this build in Google Cloud Console.
+  },
+  "includedFiles": [ # If any of the files altered in the commit pass the ignored_files
+      # filter and included_files is empty, then as far as this filter is
+      # concerned, we should trigger the build.
+      # 
+      # If any of the files altered in the commit pass the ignored_files
+      # filter and included_files is not empty, then we make sure that at
+      # least one of those files matches a included_files glob. If not,
+      # then we do not trigger a build.
+    "A String",
+  ],
+  "triggerTemplate": { # Location of the source in a Google Cloud Source Repository. # Template describing the types of source changes to trigger a build.
+      # 
+      # Branch and tag names in trigger templates are interpreted as regular
+      # expressions. Any branch or tag change that matches that regular expression
+      # will trigger a build.
+    "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+        # project ID requesting the build is assumed.
+    "commitSha": "A String", # Explicit commit SHA to build.
+    "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+        # assumed.
+    "tagName": "A String", # Name of the tag to build.
+    "branchName": "A String", # Name of the branch to build.
+    "dir": "A String", # Directory, relative to the source root, in which to run the build.
+        #
+        # This must be a relative path. If a step's `dir` is specified and is an
+        # absolute path, this value is ignored for that step's execution.
+  },
+  "id": "A String", # Output only. Unique identifier of the trigger.
+}
+
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # Configuration for an automated build in response to source repository
       # changes.
+    "github": { # GitHubEventsConfig describes the configuration of a trigger that creates a # GitHubEventsConfig describes the configuration of a trigger that creates
+        # a build whenever a GitHub event is received.
+        # build whenever a GitHub event is received.
+        #
+        # This message is experimental.
+      "name": "A String", # Name of the repository.
+      "pullRequest": { # PullRequestFilter contains filter properties for matching GitHub Pull # filter to match changes in pull requests.
+          # Requests.
+        "commentControl": "A String", # Whether to block builds on a "/gcbrun" comment from a repository owner or
+            # collaborator.
+        "branch": "A String", # Regex of branches to match.
+            #
+            # The syntax of the regular expressions accepted is the syntax accepted by
+            # RE2 and described at https://github.com/google/re2/wiki/Syntax
+      },
+      "owner": "A String", # Owner of the repository.
+      "push": { # Push contains filter properties for matching GitHub git pushes. # filter to match changes in refs like branches, tags.
+        "tag": "A String", # Regexes of tags to match.
+            #
+            # The syntax of the regular expressions accepted is the syntax accepted by
+            # RE2 and described at https://github.com/google/re2/wiki/Syntax
+        "branch": "A String", # Regexes of branches to match.
+            #
+            # The syntax of the regular expressions accepted is the syntax accepted by
+            # RE2 and described at https://github.com/google/re2/wiki/Syntax
+      },
+      "installationId": "A String", # The installationID that emmits the GitHub event.
+      "checkSuite": { # A CheckSuiteFilter is a filter that indicates that we should build on all # Output only. Indicates that a build was generated from a check suite
+          # event.
+          # check suite events.
+      },
+    },
     "description": "A String", # Human-readable description of this trigger.
+    "tags": [ # Tags for annotation of a `BuildTrigger`
+      "A String",
+    ],
+    "ignoredFiles": [ # ignored_files and included_files are file glob matches using
+        # http://godoc/pkg/path/filepath#Match extended with support for "**".
+        #
+        # If ignored_files and changed files are both empty, then they are
+        # not used to determine whether or not to trigger a build.
+        #
+        # If ignored_files is not empty, then we ignore any files that match
+        # any of the ignored_file globs. If the change has no files that are
+        # outside of the ignored_files globs, then we do not trigger a build.
+      "A String",
+    ],
     "filename": "A String", # Path, from the source root, to a file whose contents is used for the
         # template.
-    "createTime": "A String", # Time when the trigger was created.
-        # 
-        # @OutputOnly
+    "createTime": "A String", # Output only. Time when the trigger was created.
     "substitutions": { # Substitutions data for Build resource.
       "a_key": "A String",
     },
     "disabled": True or False, # If true, the trigger will never result in a build.
-    "build": { # A build resource in the Container Builder API. # Contents of the build template.
+    "build": { # A build resource in the Cloud Build API. # Contents of the build template.
         #
-        # At a high level, a Build describes where to find source code, how to build
-        # it (for example, the builder image to run on the source), and what tag to
-        # apply to the built image when it is pushed to Google Container Registry.
+        # At a high level, a `Build` describes where to find source code, how to build
+        # it (for example, the builder image to run on the source), and where to store
+        # the built artifacts.
         #
-        # Fields can include the following variables which will be expanded when the
+        # Fields can include the following variables, which will be expanded when the
         # build is created:
         #
         # - $PROJECT_ID: the project ID of the build.
@@ -129,91 +660,294 @@
         # - $TAG_NAME: the tag name specified by RepoSource.
         # - $REVISION_ID or $COMMIT_SHA: the commit SHA specified by RepoSource or
         #   resolved from the specified branch or tag.
-      "finishTime": "A String", # Time at which execution of the build was finished.
-          #
-          # The difference between finish_time and start_time is the duration of the
-          # build's execution.
-          # @OutputOnly
-      "status": "A String", # Status of the build.
-          # @OutputOnly
-      "startTime": "A String", # Time at which execution of the build was started.
-          # @OutputOnly
-      "statusDetail": "A String", # Customer-readable message about the current status.
-          # @OutputOnly
-      "tags": [ # Tags for annotation of a Build. These are not docker tags.
-        "A String",
-      ],
-      "projectId": "A String", # ID of the project.
-          # @OutputOnly.
-      "id": "A String", # Unique identifier of the build.
-          # @OutputOnly
-      "results": { # Results describes the artifacts created by the build pipeline. # Results of the build.
-          # @OutputOnly
-        "images": [ # Images that were built as a part of the build.
-          { # BuiltImage describes an image built by the pipeline.
+        # - $SHORT_SHA: first 7 characters of $REVISION_ID or $COMMIT_SHA.
+      "results": { # Artifacts created by the build pipeline. # Output only. Results of the build.
+        "buildStepOutputs": [ # List of build step outputs, produced by builder images, in the order
+            # corresponding to build step indices.
+            #
+            # [Cloud Builders](https://cloud.google.com/cloud-build/docs/cloud-builders)
+            # can produce this output by writing to `$BUILDER_OUTPUT/output`.
+            # Only the first 4KB of data is stored.
+          "A String",
+        ],
+        "artifactTiming": { # Start and end times for a build execution phase. # Time to push all non-container artifacts.
+          "endTime": "A String", # End of time span.
+          "startTime": "A String", # Start of time span.
+        },
+        "artifactManifest": "A String", # Path to the artifact manifest. Only populated when artifacts are uploaded.
+        "images": [ # Container images that were built as a part of the build.
+          { # An image built by the pipeline.
+            "pushTiming": { # Start and end times for a build execution phase. # Output only. Stores timing information for pushing the specified image.
+              "endTime": "A String", # End of time span.
+              "startTime": "A String", # Start of time span.
+            },
             "name": "A String", # Name used to push the container image to Google Container Registry, as
                 # presented to `docker push`.
             "digest": "A String", # Docker Registry 2.0 digest.
           },
         ],
-        "buildStepImages": [ # List of build step digests, in order corresponding to build step indices.
+        "buildStepImages": [ # List of build step digests, in the order corresponding to build step
+            # indices.
           "A String",
         ],
+        "numArtifacts": "A String", # Number of artifacts uploaded. Only populated when artifacts are uploaded.
       },
-      "timeout": "A String", # Amount of time that this build should be allowed to run, to second
-          # granularity. If this amount of time elapses, work on the build will cease
-          # and the build status will be TIMEOUT.
-          #
-          # Default time is ten minutes.
-      "substitutions": { # Substitutions data for Build resource.
-        "a_key": "A String",
-      },
-      "source": { # Source describes the location of the source in a supported storage # Describes where to find the source files to build.
-          # service.
-        "repoSource": { # RepoSource describes the location of the source in a Google Cloud Source # If provided, get source from this location in a Cloud Repo.
-            # Repository.
-          "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-              # the build is assumed.
-          "branchName": "A String", # Name of the branch to build.
+      "sourceProvenance": { # Provenance of the source. Ways to find the original source, or verify that # Output only. A permanent fixed identifier for source.
+          # some source was used for this build.
+        "resolvedRepoSource": { # Location of the source in a Google Cloud Source Repository. # A copy of the build's `source.repo_source`, if exists, with any
+            # revisions resolved.
+          "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+              # project ID requesting the build is assumed.
           "commitSha": "A String", # Explicit commit SHA to build.
+          "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+              # assumed.
           "tagName": "A String", # Name of the tag to build.
-          "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
+          "branchName": "A String", # Name of the branch to build.
+          "dir": "A String", # Directory, relative to the source root, in which to run the build.
+              #
+              # This must be a relative path. If a step's `dir` is specified and is an
+              # absolute path, this value is ignored for that step's execution.
         },
-        "storageSource": { # StorageSource describes the location of the source in an archive file in # If provided, get the source from this location in in Google Cloud
-            # Storage.
-            # Google Cloud Storage.
+        "fileHashes": { # Output only. Hash(es) of the build source, which can be used to verify that
+            # the original source integrity was maintained in the build. Note that
+            # `FileHashes` will only be populated if `BuildOptions` has requested a
+            # `SourceProvenanceHash`.
+            #
+            # The keys to this map are file paths used as build source and the values
+            # contain the hash values for those files.
+            #
+            # If the build source came in a single package such as a gzipped tarfile
+            # (`.tar.gz`), the `FileHash` will be for the single path to that file.
+          "a_key": { # Container message for hashes of byte content of files, used in
+              # SourceProvenance messages to verify integrity of source input to the build.
+            "fileHash": [ # Collection of file hashes.
+              { # Container message for hash values.
+                "type": "A String", # The type of hash that was performed.
+                "value": "A String", # The hash value.
+              },
+            ],
+          },
+        },
+        "resolvedStorageSource": { # Location of the source in an archive file in Google Cloud Storage. # A copy of the build's `source.storage_source`, if exists, with any
+            # generations resolved.
           "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
               # omitted, the latest generation will be used.
-          "object": "A String", # Google Cloud Storage object containing source.
+          "object": "A String", # Google Cloud Storage object containing the source.
               #
-              # This object must be a gzipped archive file (.tar.gz) containing source to
+              # This object must be a gzipped archive file (`.tar.gz`) containing source to
               # build.
-          "bucket": "A String", # Google Cloud Storage bucket containing source (see
+          "bucket": "A String", # Google Cloud Storage bucket containing the source (see
               # [Bucket Name
               # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
         },
       },
-      "buildTriggerId": "A String", # The ID of the BuildTrigger that triggered this build, if it was
-          # triggered automatically.
-          # @OutputOnly
-      "options": { # Optional arguments to enable specific features of builds. # Special options for this build.
-        "requestedVerifyOption": "A String", # Requested verifiability options.
-        "sourceProvenanceHash": [ # Requested hash for SourceProvenance.
+      "images": [ # A list of images to be pushed upon the successful completion of all build
+          # steps.
+          #
+          # The images are pushed using the builder service account's credentials.
+          #
+          # The digests of the pushed images will be stored in the `Build` resource's
+          # results field.
+          #
+          # If any of the images fail to be pushed, the build status is marked
+          # `FAILURE`.
+        "A String",
+      ],
+      "id": "A String", # Output only. Unique identifier of the build.
+      "artifacts": { # Artifacts produced by a build that should be uploaded upon # Artifacts produced by the build that should be uploaded upon
+          # successful completion of all build steps.
+          # successful completion of all build steps.
+        "images": [ # A list of images to be pushed upon the successful completion of all build
+            # steps.
+            #
+            # The images will be pushed using the builder service account's credentials.
+            #
+            # The digests of the pushed images will be stored in the Build resource's
+            # results field.
+            #
+            # If any of the images fail to be pushed, the build is marked FAILURE.
           "A String",
         ],
-      },
-      "steps": [ # Describes the operations to be performed on the workspace.
-        { # BuildStep describes a step to perform in the build pipeline.
-          "waitFor": [ # The ID(s) of the step(s) that this build step depends on.
-              # This build step will not start until all the build steps in wait_for
-              # have completed successfully. If wait_for is empty, this build step will
-              # start when all previous build steps in the Build.Steps list have completed
-              # successfully.
+        "objects": { # Files in the workspace to upload to Cloud Storage upon successful # A list of objects to be uploaded to Cloud Storage upon successful
+            # completion of all build steps.
+            #
+            # Files in the workspace matching specified paths globs will be uploaded to
+            # the specified Cloud Storage location using the builder service account's
+            # credentials.
+            #
+            # The location and generation of the uploaded objects will be stored in the
+            # Build resource's results field.
+            #
+            # If any objects fail to be pushed, the build is marked FAILURE.
+            # completion of all build steps.
+          "timing": { # Start and end times for a build execution phase. # Output only. Stores timing information for pushing all artifact objects.
+            "endTime": "A String", # End of time span.
+            "startTime": "A String", # Start of time span.
+          },
+          "paths": [ # Path globs used to match files in the build's workspace.
             "A String",
           ],
-          "name": "A String", # The name of the container image that will run this particular build step.
+          "location": "A String", # Cloud Storage bucket and optional object path, in the form
+              # "gs://bucket/path/to/somewhere/". (see [Bucket Name
+              # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
               #
-              # If the image is already available in the host's Docker daemon's cache, it
+              # Files in the workspace matching any path pattern will be uploaded to
+              # Cloud Storage with this location as a prefix.
+        },
+      },
+      "projectId": "A String", # Output only. ID of the project.
+      "substitutions": { # Substitutions data for `Build` resource.
+        "a_key": "A String",
+      },
+      "source": { # Location of the source in a supported storage service. # The location of the source files to build.
+        "repoSource": { # Location of the source in a Google Cloud Source Repository. # If provided, get the source from this location in a Cloud Source
+            # Repository.
+          "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+              # project ID requesting the build is assumed.
+          "commitSha": "A String", # Explicit commit SHA to build.
+          "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+              # assumed.
+          "tagName": "A String", # Name of the tag to build.
+          "branchName": "A String", # Name of the branch to build.
+          "dir": "A String", # Directory, relative to the source root, in which to run the build.
+              #
+              # This must be a relative path. If a step's `dir` is specified and is an
+              # absolute path, this value is ignored for that step's execution.
+        },
+        "storageSource": { # Location of the source in an archive file in Google Cloud Storage. # If provided, get the source from this location in Google Cloud Storage.
+          "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
+              # omitted, the latest generation will be used.
+          "object": "A String", # Google Cloud Storage object containing the source.
+              #
+              # This object must be a gzipped archive file (`.tar.gz`) containing source to
+              # build.
+          "bucket": "A String", # Google Cloud Storage bucket containing the source (see
+              # [Bucket Name
+              # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+        },
+      },
+      "status": "A String", # Output only. Status of the build.
+      "tags": [ # Tags for annotation of a `Build`. These are not docker tags.
+        "A String",
+      ],
+      "statusDetail": "A String", # Output only. Customer-readable message about the current status.
+      "startTime": "A String", # Output only. Time at which execution of the build was started.
+      "timing": { # Output only. Stores timing information for phases of the build. Valid keys
+          # are:
+          #
+          # * BUILD: time to execute all build steps
+          # * PUSH: time to push all specified images.
+          # * FETCHSOURCE: time to fetch source.
+          #
+          # If the build does not specify source or images,
+          # these keys will not be included.
+        "a_key": { # Start and end times for a build execution phase.
+          "endTime": "A String", # End of time span.
+          "startTime": "A String", # Start of time span.
+        },
+      },
+      "createTime": "A String", # Output only. Time at which the request to create the build was received.
+      "finishTime": "A String", # Output only. Time at which execution of the build was finished.
+          #
+          # The difference between finish_time and start_time is the duration of the
+          # build's execution.
+      "buildTriggerId": "A String", # Output only. The ID of the `BuildTrigger` that triggered this build, if it
+          # was triggered automatically.
+      "secrets": [ # Secrets to decrypt using Cloud Key Management Service.
+        { # Pairs a set of secret environment variables containing encrypted
+            # values with the Cloud KMS key to use to decrypt the value.
+          "secretEnv": { # Map of environment variable name to its encrypted value.
+              #
+              # Secret environment variables must be unique across all of a build's
+              # secrets, and must be used by at least one build step. Values can be at most
+              # 64 KB in size. There can be at most 100 secret values across all of a
+              # build's secrets.
+            "a_key": "A String",
+          },
+          "kmsKeyName": "A String", # Cloud KMS key name to use to decrypt these envs.
+        },
+      ],
+      "steps": [ # Required. The operations to be performed on the workspace.
+        { # A step in the build pipeline.
+          "status": "A String", # Output only. Status of the build step. At this time, build step status is
+              # only updated on build completion; step status is not updated in real-time
+              # as the build progresses.
+          "args": [ # A list of arguments that will be presented to the step when it is started.
+              #
+              # If the image used to run the step's container has an entrypoint, the `args`
+              # are used as arguments to that entrypoint. If the image does not define
+              # an entrypoint, the first element in args is used as the entrypoint,
+              # and the remainder will be used as arguments.
+            "A String",
+          ],
+          "env": [ # A list of environment variable definitions to be used when running a step.
+              #
+              # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
+              # being given the value "VALUE".
+            "A String",
+          ],
+          "waitFor": [ # The ID(s) of the step(s) that this build step depends on.
+              # This build step will not start until all the build steps in `wait_for`
+              # have completed successfully. If `wait_for` is empty, this build step will
+              # start when all previous build steps in the `Build.Steps` list have
+              # completed successfully.
+            "A String",
+          ],
+          "timeout": "A String", # Time limit for executing this build step. If not defined, the step has no
+              # time limit and will be allowed to continue to run until either it completes
+              # or the build itself times out.
+          "secretEnv": [ # A list of environment variables which are encrypted using a Cloud Key
+              # Management Service crypto key. These values must be specified in the
+              # build's `Secret`.
+            "A String",
+          ],
+          "entrypoint": "A String", # Entrypoint to be used instead of the build step image's default entrypoint.
+              # If unset, the image's default entrypoint is used.
+          "volumes": [ # List of volumes to mount into the build step.
+              #
+              # Each volume is created as an empty volume prior to execution of the
+              # build step. Upon completion of the build, volumes and their contents are
+              # discarded.
+              #
+              # Using a named volume in only one step is not valid as it is indicative
+              # of a build request with an incorrect configuration.
+            { # Volume describes a Docker container volume which is mounted into build steps
+                # in order to persist files across build step execution.
+              "path": "A String", # Path at which to mount the volume.
+                  #
+                  # Paths must be absolute and cannot conflict with other volume paths on the
+                  # same build step or with certain reserved volume paths.
+              "name": "A String", # Name of the volume to mount.
+                  #
+                  # Volume names must be unique per build step and must be valid names for
+                  # Docker volumes. Each named volume must be used by at least two build steps.
+            },
+          ],
+          "timing": { # Start and end times for a build execution phase. # Output only. Stores timing information for executing this build step.
+            "endTime": "A String", # End of time span.
+            "startTime": "A String", # Start of time span.
+          },
+          "pullTiming": { # Start and end times for a build execution phase. # Output only. Stores timing information for pulling this build step's
+              # builder image only.
+            "endTime": "A String", # End of time span.
+            "startTime": "A String", # Start of time span.
+          },
+          "id": "A String", # Unique identifier for this build step, used in `wait_for` to
+              # reference this build step as a dependency.
+          "dir": "A String", # Working directory to use when running this step's container.
+              #
+              # If this value is a relative path, it is relative to the build's working
+              # directory. If this value is absolute, it may be outside the build's working
+              # directory, in which case the contents of the path may not be persisted
+              # across build step executions, unless a `volume` for that path is specified.
+              #
+              # If the build specifies a `RepoSource` with `dir` and a step with a `dir`,
+              # which specifies an absolute path, the `RepoSource` `dir` is ignored for
+              # the step's execution.
+          "name": "A String", # Required. The name of the container image that will run this particular
+              # build step.
+              #
+              # If the image is available in the host's Docker daemon's cache, it
               # will be run directly. If not, the host will attempt to pull the image
               # first, using the builder service account's credentials if necessary.
               #
@@ -227,364 +961,116 @@
               # If you built an image in a previous build step, it will be stored in the
               # host's Docker daemon's cache and is available to use as the name for a
               # later build step.
-          "args": [ # A list of arguments that will be presented to the step when it is started.
-              #
-              # If the image used to run the step's container has an entrypoint, these args
-              # will be used as arguments to that entrypoint. If the image does not define
-              # an entrypoint, the first element in args will be used as the entrypoint,
-              # and the remainder will be used as arguments.
-            "A String",
-          ],
-          "entrypoint": "A String", # Optional entrypoint to be used instead of the build step image's default
-              # If unset, the image's default will be used.
-          "env": [ # A list of environment variable definitions to be used when running a step.
-              #
-              # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
-              # being given the value "VALUE".
-            "A String",
-          ],
-          "id": "A String", # Optional unique identifier for this build step, used in wait_for to
-              # reference this build step as a dependency.
-          "dir": "A String", # Working directory (relative to project source root) to use when running
-              # this operation's container.
         },
       ],
-      "sourceProvenance": { # Provenance of the source. Ways to find the original source, or verify that # A permanent fixed identifier for source.
-          # @OutputOnly
-          # some source was used for this build.
-        "resolvedRepoSource": { # RepoSource describes the location of the source in a Google Cloud Source # A copy of the build's source.repo_source, if exists, with any
-            # revisions resolved.
-            # Repository.
-          "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-              # the build is assumed.
-          "branchName": "A String", # Name of the branch to build.
-          "commitSha": "A String", # Explicit commit SHA to build.
-          "tagName": "A String", # Name of the tag to build.
-          "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
-        },
-        "fileHashes": { # Hash(es) of the build source, which can be used to verify that the original
-            # source integrity was maintained in the build. Note that FileHashes will
-            # only be populated if BuildOptions has requested a SourceProvenanceHash.
-            #
-            # The keys to this map are file paths used as build source and the values
-            # contain the hash values for those files.
-            #
-            # If the build source came in a single package such as a gzipped tarfile
-            # (.tar.gz), the FileHash will be for the single path to that file.
-            # @OutputOnly
-          "a_key": { # Container message for hashes of byte content of files, used in
-              # SourceProvenance messages to verify integrity of source input to the build.
-            "fileHash": [ # Collection of file hashes.
-              { # Container message for hash values.
-                "type": "A String", # The type of hash that was performed.
-                "value": "A String", # The hash value.
-              },
-            ],
-          },
-        },
-        "resolvedStorageSource": { # StorageSource describes the location of the source in an archive file in # A copy of the build's source.storage_source, if exists, with any
-            # generations resolved.
-            # Google Cloud Storage.
-          "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
-              # omitted, the latest generation will be used.
-          "object": "A String", # Google Cloud Storage object containing source.
-              #
-              # This object must be a gzipped archive file (.tar.gz) containing source to
-              # build.
-          "bucket": "A String", # Google Cloud Storage bucket containing source (see
-              # [Bucket Name
-              # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
-        },
-      },
+      "timeout": "A String", # Amount of time that this build should be allowed to run, to second
+          # granularity. If this amount of time elapses, work on the build will cease
+          # and the build status will be `TIMEOUT`.
+          #
+          # Default time is ten minutes.
       "logsBucket": "A String", # Google Cloud Storage bucket where logs should be written (see
           # [Bucket Name
           # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
           # Logs file names will be of the format `${logs_bucket}/log-${build_id}.txt`.
-      "images": [ # A list of images to be pushed upon the successful completion of all build
-          # steps.
-          #
-          # The images will be pushed using the builder service account's credentials.
-          #
-          # The digests of the pushed images will be stored in the Build resource's
-          # results field.
-          #
-          # If any of the images fail to be pushed, the build is marked FAILURE.
-        "A String",
-      ],
-      "createTime": "A String", # Time at which the request to create the build was received.
-          # @OutputOnly
-      "logUrl": "A String", # URL to logs for this build in Google Cloud Logging.
-          # @OutputOnly
+      "options": { # Optional arguments to enable specific features of builds. # Special options for this build.
+        "substitutionOption": "A String", # Option to specify behavior when there is an error in the substitution
+            # checks.
+        "logging": "A String", # Option to specify the logging mode, which determines where the logs are
+            # stored.
+        "volumes": [ # Global list of volumes to mount for ALL build steps
+            #
+            # Each volume is created as an empty volume prior to starting the build
+            # process. Upon completion of the build, volumes and their contents are
+            # discarded. Global volume names and paths cannot conflict with the volumes
+            # defined a build step.
+            #
+            # Using a global volume in a build with only one step is not valid as
+            # it is indicative of a build request with an incorrect configuration.
+          { # Volume describes a Docker container volume which is mounted into build steps
+              # in order to persist files across build step execution.
+            "path": "A String", # Path at which to mount the volume.
+                #
+                # Paths must be absolute and cannot conflict with other volume paths on the
+                # same build step or with certain reserved volume paths.
+            "name": "A String", # Name of the volume to mount.
+                #
+                # Volume names must be unique per build step and must be valid names for
+                # Docker volumes. Each named volume must be used by at least two build steps.
+          },
+        ],
+        "workerPool": "A String", # Option to specify a `WorkerPool` for the build. User specifies the pool
+            # with the format "[WORKERPOOL_PROJECT_ID]/[WORKERPOOL_NAME]".
+            # This is an experimental field.
+        "logStreamingOption": "A String", # Option to define build log streaming behavior to Google Cloud
+            # Storage.
+        "sourceProvenanceHash": [ # Requested hash for SourceProvenance.
+          "A String",
+        ],
+        "secretEnv": [ # A list of global environment variables, which are encrypted using a Cloud
+            # Key Management Service crypto key. These values must be specified in the
+            # build's `Secret`. These variables will be available to all build steps
+            # in this build.
+          "A String",
+        ],
+        "diskSizeGb": "A String", # Requested disk size for the VM that runs the build. Note that this is *NOT*
+            # "disk free"; some of the space will be used by the operating system and
+            # build utilities. Also note that this is the minimum disk size that will be
+            # allocated for the build -- the build may run with a larger disk than
+            # requested. At present, the maximum disk size is 1000GB; builds that request
+            # more than the maximum are rejected with an error.
+        "env": [ # A list of global environment variable definitions that will exist for all
+            # build steps in this build. If a variable is defined in both globally and in
+            # a build step, the variable will use the build step value.
+            #
+            # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
+            # being given the value "VALUE".
+          "A String",
+        ],
+        "requestedVerifyOption": "A String", # Requested verifiability options.
+        "machineType": "A String", # Compute Engine machine type on which to run the build.
+      },
+      "logUrl": "A String", # Output only. URL to logs for this build in Google Cloud Console.
     },
-    "triggerTemplate": { # RepoSource describes the location of the source in a Google Cloud Source # Template describing the types of source changes to trigger a build.
-        # 
+    "includedFiles": [ # If any of the files altered in the commit pass the ignored_files
+        # filter and included_files is empty, then as far as this filter is
+        # concerned, we should trigger the build.
+        #
+        # If any of the files altered in the commit pass the ignored_files
+        # filter and included_files is not empty, then we make sure that at
+        # least one of those files matches a included_files glob. If not,
+        # then we do not trigger a build.
+      "A String",
+    ],
+    "triggerTemplate": { # Location of the source in a Google Cloud Source Repository. # Template describing the types of source changes to trigger a build.
+        #
         # Branch and tag names in trigger templates are interpreted as regular
         # expressions. Any branch or tag change that matches that regular expression
         # will trigger a build.
-        # Repository.
-      "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-          # the build is assumed.
-      "branchName": "A String", # Name of the branch to build.
+      "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+          # project ID requesting the build is assumed.
       "commitSha": "A String", # Explicit commit SHA to build.
+      "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+          # assumed.
       "tagName": "A String", # Name of the tag to build.
-      "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
+      "branchName": "A String", # Name of the branch to build.
+      "dir": "A String", # Directory, relative to the source root, in which to run the build.
+          #
+          # This must be a relative path. If a step's `dir` is specified and is an
+          # absolute path, this value is ignored for that step's execution.
     },
-    "id": "A String", # Unique identifier of the trigger.
-        # 
-        # @OutputOnly
-  }
-
-  x__xgafv: string, V1 error format.
-    Allowed values
-      1 - v1 error format
-      2 - v2 error format
-
-Returns:
-  An object of the form:
-
-    { # Configuration for an automated build in response to source repository
-        # changes.
-      "description": "A String", # Human-readable description of this trigger.
-      "filename": "A String", # Path, from the source root, to a file whose contents is used for the
-          # template.
-      "createTime": "A String", # Time when the trigger was created.
-          #
-          # @OutputOnly
-      "substitutions": { # Substitutions data for Build resource.
-        "a_key": "A String",
-      },
-      "disabled": True or False, # If true, the trigger will never result in a build.
-      "build": { # A build resource in the Container Builder API. # Contents of the build template.
-          #
-          # At a high level, a Build describes where to find source code, how to build
-          # it (for example, the builder image to run on the source), and what tag to
-          # apply to the built image when it is pushed to Google Container Registry.
-          #
-          # Fields can include the following variables which will be expanded when the
-          # build is created:
-          #
-          # - $PROJECT_ID: the project ID of the build.
-          # - $BUILD_ID: the autogenerated ID of the build.
-          # - $REPO_NAME: the source repository name specified by RepoSource.
-          # - $BRANCH_NAME: the branch name specified by RepoSource.
-          # - $TAG_NAME: the tag name specified by RepoSource.
-          # - $REVISION_ID or $COMMIT_SHA: the commit SHA specified by RepoSource or
-          #   resolved from the specified branch or tag.
-        "finishTime": "A String", # Time at which execution of the build was finished.
-            #
-            # The difference between finish_time and start_time is the duration of the
-            # build's execution.
-            # @OutputOnly
-        "status": "A String", # Status of the build.
-            # @OutputOnly
-        "startTime": "A String", # Time at which execution of the build was started.
-            # @OutputOnly
-        "statusDetail": "A String", # Customer-readable message about the current status.
-            # @OutputOnly
-        "tags": [ # Tags for annotation of a Build. These are not docker tags.
-          "A String",
-        ],
-        "projectId": "A String", # ID of the project.
-            # @OutputOnly.
-        "id": "A String", # Unique identifier of the build.
-            # @OutputOnly
-        "results": { # Results describes the artifacts created by the build pipeline. # Results of the build.
-            # @OutputOnly
-          "images": [ # Images that were built as a part of the build.
-            { # BuiltImage describes an image built by the pipeline.
-              "name": "A String", # Name used to push the container image to Google Container Registry, as
-                  # presented to `docker push`.
-              "digest": "A String", # Docker Registry 2.0 digest.
-            },
-          ],
-          "buildStepImages": [ # List of build step digests, in order corresponding to build step indices.
-            "A String",
-          ],
-        },
-        "timeout": "A String", # Amount of time that this build should be allowed to run, to second
-            # granularity. If this amount of time elapses, work on the build will cease
-            # and the build status will be TIMEOUT.
-            #
-            # Default time is ten minutes.
-        "substitutions": { # Substitutions data for Build resource.
-          "a_key": "A String",
-        },
-        "source": { # Source describes the location of the source in a supported storage # Describes where to find the source files to build.
-            # service.
-          "repoSource": { # RepoSource describes the location of the source in a Google Cloud Source # If provided, get source from this location in a Cloud Repo.
-              # Repository.
-            "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-                # the build is assumed.
-            "branchName": "A String", # Name of the branch to build.
-            "commitSha": "A String", # Explicit commit SHA to build.
-            "tagName": "A String", # Name of the tag to build.
-            "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
-          },
-          "storageSource": { # StorageSource describes the location of the source in an archive file in # If provided, get the source from this location in in Google Cloud
-              # Storage.
-              # Google Cloud Storage.
-            "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
-                # omitted, the latest generation will be used.
-            "object": "A String", # Google Cloud Storage object containing source.
-                #
-                # This object must be a gzipped archive file (.tar.gz) containing source to
-                # build.
-            "bucket": "A String", # Google Cloud Storage bucket containing source (see
-                # [Bucket Name
-                # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
-          },
-        },
-        "buildTriggerId": "A String", # The ID of the BuildTrigger that triggered this build, if it was
-            # triggered automatically.
-            # @OutputOnly
-        "options": { # Optional arguments to enable specific features of builds. # Special options for this build.
-          "requestedVerifyOption": "A String", # Requested verifiability options.
-          "sourceProvenanceHash": [ # Requested hash for SourceProvenance.
-            "A String",
-          ],
-        },
-        "steps": [ # Describes the operations to be performed on the workspace.
-          { # BuildStep describes a step to perform in the build pipeline.
-            "waitFor": [ # The ID(s) of the step(s) that this build step depends on.
-                # This build step will not start until all the build steps in wait_for
-                # have completed successfully. If wait_for is empty, this build step will
-                # start when all previous build steps in the Build.Steps list have completed
-                # successfully.
-              "A String",
-            ],
-            "name": "A String", # The name of the container image that will run this particular build step.
-                #
-                # If the image is already available in the host's Docker daemon's cache, it
-                # will be run directly. If not, the host will attempt to pull the image
-                # first, using the builder service account's credentials if necessary.
-                #
-                # The Docker daemon's cache will already have the latest versions of all of
-                # the officially supported build steps
-                # ([https://github.com/GoogleCloudPlatform/cloud-builders](https://github.com/GoogleCloudPlatform/cloud-builders)).
-                # The Docker daemon will also have cached many of the layers for some popular
-                # images, like "ubuntu", "debian", but they will be refreshed at the time you
-                # attempt to use them.
-                #
-                # If you built an image in a previous build step, it will be stored in the
-                # host's Docker daemon's cache and is available to use as the name for a
-                # later build step.
-            "args": [ # A list of arguments that will be presented to the step when it is started.
-                #
-                # If the image used to run the step's container has an entrypoint, these args
-                # will be used as arguments to that entrypoint. If the image does not define
-                # an entrypoint, the first element in args will be used as the entrypoint,
-                # and the remainder will be used as arguments.
-              "A String",
-            ],
-            "entrypoint": "A String", # Optional entrypoint to be used instead of the build step image's default
-                # If unset, the image's default will be used.
-            "env": [ # A list of environment variable definitions to be used when running a step.
-                #
-                # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
-                # being given the value "VALUE".
-              "A String",
-            ],
-            "id": "A String", # Optional unique identifier for this build step, used in wait_for to
-                # reference this build step as a dependency.
-            "dir": "A String", # Working directory (relative to project source root) to use when running
-                # this operation's container.
-          },
-        ],
-        "sourceProvenance": { # Provenance of the source. Ways to find the original source, or verify that # A permanent fixed identifier for source.
-            # @OutputOnly
-            # some source was used for this build.
-          "resolvedRepoSource": { # RepoSource describes the location of the source in a Google Cloud Source # A copy of the build's source.repo_source, if exists, with any
-              # revisions resolved.
-              # Repository.
-            "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-                # the build is assumed.
-            "branchName": "A String", # Name of the branch to build.
-            "commitSha": "A String", # Explicit commit SHA to build.
-            "tagName": "A String", # Name of the tag to build.
-            "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
-          },
-          "fileHashes": { # Hash(es) of the build source, which can be used to verify that the original
-              # source integrity was maintained in the build. Note that FileHashes will
-              # only be populated if BuildOptions has requested a SourceProvenanceHash.
-              #
-              # The keys to this map are file paths used as build source and the values
-              # contain the hash values for those files.
-              #
-              # If the build source came in a single package such as a gzipped tarfile
-              # (.tar.gz), the FileHash will be for the single path to that file.
-              # @OutputOnly
-            "a_key": { # Container message for hashes of byte content of files, used in
-                # SourceProvenance messages to verify integrity of source input to the build.
-              "fileHash": [ # Collection of file hashes.
-                { # Container message for hash values.
-                  "type": "A String", # The type of hash that was performed.
-                  "value": "A String", # The hash value.
-                },
-              ],
-            },
-          },
-          "resolvedStorageSource": { # StorageSource describes the location of the source in an archive file in # A copy of the build's source.storage_source, if exists, with any
-              # generations resolved.
-              # Google Cloud Storage.
-            "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
-                # omitted, the latest generation will be used.
-            "object": "A String", # Google Cloud Storage object containing source.
-                #
-                # This object must be a gzipped archive file (.tar.gz) containing source to
-                # build.
-            "bucket": "A String", # Google Cloud Storage bucket containing source (see
-                # [Bucket Name
-                # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
-          },
-        },
-        "logsBucket": "A String", # Google Cloud Storage bucket where logs should be written (see
-            # [Bucket Name
-            # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
-            # Logs file names will be of the format `${logs_bucket}/log-${build_id}.txt`.
-        "images": [ # A list of images to be pushed upon the successful completion of all build
-            # steps.
-            #
-            # The images will be pushed using the builder service account's credentials.
-            #
-            # The digests of the pushed images will be stored in the Build resource's
-            # results field.
-            #
-            # If any of the images fail to be pushed, the build is marked FAILURE.
-          "A String",
-        ],
-        "createTime": "A String", # Time at which the request to create the build was received.
-            # @OutputOnly
-        "logUrl": "A String", # URL to logs for this build in Google Cloud Logging.
-            # @OutputOnly
-      },
-      "triggerTemplate": { # RepoSource describes the location of the source in a Google Cloud Source # Template describing the types of source changes to trigger a build.
-          #
-          # Branch and tag names in trigger templates are interpreted as regular
-          # expressions. Any branch or tag change that matches that regular expression
-          # will trigger a build.
-          # Repository.
-        "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-            # the build is assumed.
-        "branchName": "A String", # Name of the branch to build.
-        "commitSha": "A String", # Explicit commit SHA to build.
-        "tagName": "A String", # Name of the tag to build.
-        "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
-      },
-      "id": "A String", # Unique identifier of the trigger.
-          #
-          # @OutputOnly
-    }</pre>
+    "id": "A String", # Output only. Unique identifier of the trigger.
+  }</pre>
 </div>
 
 <div class="method">
     <code class="details" id="delete">delete(projectId, triggerId, x__xgafv=None)</code>
-  <pre>Deletes an BuildTrigger by its project ID and trigger ID.
+  <pre>Deletes a `BuildTrigger` by its project ID and trigger ID.
 
 This API is experimental.
 
 Args:
   projectId: string, ID of the project that owns the trigger. (required)
-  triggerId: string, ID of the BuildTrigger to delete. (required)
+  triggerId: string, ID of the `BuildTrigger` to delete. (required)
   x__xgafv: string, V1 error format.
     Allowed values
       1 - v1 error format
@@ -607,13 +1093,13 @@
 
 <div class="method">
     <code class="details" id="get">get(projectId, triggerId, x__xgafv=None)</code>
-  <pre>Gets information about a BuildTrigger.
+  <pre>Returns information about a `BuildTrigger`.
 
 This API is experimental.
 
 Args:
   projectId: string, ID of the project that owns the trigger. (required)
-  triggerId: string, ID of the BuildTrigger to get. (required)
+  triggerId: string, ID of the `BuildTrigger` to get. (required)
   x__xgafv: string, V1 error format.
     Allowed values
       1 - v1 error format
@@ -623,204 +1109,174 @@
   An object of the form:
 
     { # Configuration for an automated build in response to source repository
-        # changes.
-      "description": "A String", # Human-readable description of this trigger.
-      "filename": "A String", # Path, from the source root, to a file whose contents is used for the
-          # template.
-      "createTime": "A String", # Time when the trigger was created.
-          #
-          # @OutputOnly
-      "substitutions": { # Substitutions data for Build resource.
-        "a_key": "A String",
-      },
-      "disabled": True or False, # If true, the trigger will never result in a build.
-      "build": { # A build resource in the Container Builder API. # Contents of the build template.
-          #
-          # At a high level, a Build describes where to find source code, how to build
-          # it (for example, the builder image to run on the source), and what tag to
-          # apply to the built image when it is pushed to Google Container Registry.
-          #
-          # Fields can include the following variables which will be expanded when the
-          # build is created:
-          #
-          # - $PROJECT_ID: the project ID of the build.
-          # - $BUILD_ID: the autogenerated ID of the build.
-          # - $REPO_NAME: the source repository name specified by RepoSource.
-          # - $BRANCH_NAME: the branch name specified by RepoSource.
-          # - $TAG_NAME: the tag name specified by RepoSource.
-          # - $REVISION_ID or $COMMIT_SHA: the commit SHA specified by RepoSource or
-          #   resolved from the specified branch or tag.
-        "finishTime": "A String", # Time at which execution of the build was finished.
+      # changes.
+    "github": { # GitHubEventsConfig describes the configuration of a trigger that creates a # GitHubEventsConfig describes the configuration of a trigger that creates
+        # a build whenever a GitHub event is received.
+        # build whenever a GitHub event is received.
+        #
+        # This message is experimental.
+      "name": "A String", # Name of the repository.
+      "pullRequest": { # PullRequestFilter contains filter properties for matching GitHub Pull # filter to match changes in pull requests.
+          # Requests.
+        "commentControl": "A String", # Whether to block builds on a "/gcbrun" comment from a repository owner or
+            # collaborator.
+        "branch": "A String", # Regex of branches to match.
             #
-            # The difference between finish_time and start_time is the duration of the
-            # build's execution.
-            # @OutputOnly
-        "status": "A String", # Status of the build.
-            # @OutputOnly
-        "startTime": "A String", # Time at which execution of the build was started.
-            # @OutputOnly
-        "statusDetail": "A String", # Customer-readable message about the current status.
-            # @OutputOnly
-        "tags": [ # Tags for annotation of a Build. These are not docker tags.
+            # The syntax of the regular expressions accepted is the syntax accepted by
+            # RE2 and described at https://github.com/google/re2/wiki/Syntax
+      },
+      "owner": "A String", # Owner of the repository.
+      "push": { # Push contains filter properties for matching GitHub git pushes. # filter to match changes in refs like branches, tags.
+        "tag": "A String", # Regexes of tags to match.
+            #
+            # The syntax of the regular expressions accepted is the syntax accepted by
+            # RE2 and described at https://github.com/google/re2/wiki/Syntax
+        "branch": "A String", # Regexes of branches to match.
+            #
+            # The syntax of the regular expressions accepted is the syntax accepted by
+            # RE2 and described at https://github.com/google/re2/wiki/Syntax
+      },
+      "installationId": "A String", # The installationID that emmits the GitHub event.
+      "checkSuite": { # A CheckSuiteFilter is a filter that indicates that we should build on all # Output only. Indicates that a build was generated from a check suite
+          # event.
+          # check suite events.
+      },
+    },
+    "description": "A String", # Human-readable description of this trigger.
+    "tags": [ # Tags for annotation of a `BuildTrigger`
+      "A String",
+    ],
+    "ignoredFiles": [ # ignored_files and included_files are file glob matches using
+        # http://godoc/pkg/path/filepath#Match extended with support for "**".
+        #
+        # If ignored_files and changed files are both empty, then they are
+        # not used to determine whether or not to trigger a build.
+        #
+        # If ignored_files is not empty, then we ignore any files that match
+        # any of the ignored_file globs. If the change has no files that are
+        # outside of the ignored_files globs, then we do not trigger a build.
+      "A String",
+    ],
+    "filename": "A String", # Path, from the source root, to a file whose contents is used for the
+        # template.
+    "createTime": "A String", # Output only. Time when the trigger was created.
+    "substitutions": { # Substitutions data for Build resource.
+      "a_key": "A String",
+    },
+    "disabled": True or False, # If true, the trigger will never result in a build.
+    "build": { # A build resource in the Cloud Build API. # Contents of the build template.
+        #
+        # At a high level, a `Build` describes where to find source code, how to build
+        # it (for example, the builder image to run on the source), and where to store
+        # the built artifacts.
+        #
+        # Fields can include the following variables, which will be expanded when the
+        # build is created:
+        #
+        # - $PROJECT_ID: the project ID of the build.
+        # - $BUILD_ID: the autogenerated ID of the build.
+        # - $REPO_NAME: the source repository name specified by RepoSource.
+        # - $BRANCH_NAME: the branch name specified by RepoSource.
+        # - $TAG_NAME: the tag name specified by RepoSource.
+        # - $REVISION_ID or $COMMIT_SHA: the commit SHA specified by RepoSource or
+        #   resolved from the specified branch or tag.
+        # - $SHORT_SHA: first 7 characters of $REVISION_ID or $COMMIT_SHA.
+      "results": { # Artifacts created by the build pipeline. # Output only. Results of the build.
+        "buildStepOutputs": [ # List of build step outputs, produced by builder images, in the order
+            # corresponding to build step indices.
+            #
+            # [Cloud Builders](https://cloud.google.com/cloud-build/docs/cloud-builders)
+            # can produce this output by writing to `$BUILDER_OUTPUT/output`.
+            # Only the first 4KB of data is stored.
           "A String",
         ],
-        "projectId": "A String", # ID of the project.
-            # @OutputOnly.
-        "id": "A String", # Unique identifier of the build.
-            # @OutputOnly
-        "results": { # Results describes the artifacts created by the build pipeline. # Results of the build.
-            # @OutputOnly
-          "images": [ # Images that were built as a part of the build.
-            { # BuiltImage describes an image built by the pipeline.
-              "name": "A String", # Name used to push the container image to Google Container Registry, as
-                  # presented to `docker push`.
-              "digest": "A String", # Docker Registry 2.0 digest.
+        "artifactTiming": { # Start and end times for a build execution phase. # Time to push all non-container artifacts.
+          "endTime": "A String", # End of time span.
+          "startTime": "A String", # Start of time span.
+        },
+        "artifactManifest": "A String", # Path to the artifact manifest. Only populated when artifacts are uploaded.
+        "images": [ # Container images that were built as a part of the build.
+          { # An image built by the pipeline.
+            "pushTiming": { # Start and end times for a build execution phase. # Output only. Stores timing information for pushing the specified image.
+              "endTime": "A String", # End of time span.
+              "startTime": "A String", # Start of time span.
             },
-          ],
-          "buildStepImages": [ # List of build step digests, in order corresponding to build step indices.
-            "A String",
-          ],
-        },
-        "timeout": "A String", # Amount of time that this build should be allowed to run, to second
-            # granularity. If this amount of time elapses, work on the build will cease
-            # and the build status will be TIMEOUT.
-            #
-            # Default time is ten minutes.
-        "substitutions": { # Substitutions data for Build resource.
-          "a_key": "A String",
-        },
-        "source": { # Source describes the location of the source in a supported storage # Describes where to find the source files to build.
-            # service.
-          "repoSource": { # RepoSource describes the location of the source in a Google Cloud Source # If provided, get source from this location in a Cloud Repo.
-              # Repository.
-            "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-                # the build is assumed.
-            "branchName": "A String", # Name of the branch to build.
-            "commitSha": "A String", # Explicit commit SHA to build.
-            "tagName": "A String", # Name of the tag to build.
-            "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
-          },
-          "storageSource": { # StorageSource describes the location of the source in an archive file in # If provided, get the source from this location in in Google Cloud
-              # Storage.
-              # Google Cloud Storage.
-            "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
-                # omitted, the latest generation will be used.
-            "object": "A String", # Google Cloud Storage object containing source.
-                #
-                # This object must be a gzipped archive file (.tar.gz) containing source to
-                # build.
-            "bucket": "A String", # Google Cloud Storage bucket containing source (see
-                # [Bucket Name
-                # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
-          },
-        },
-        "buildTriggerId": "A String", # The ID of the BuildTrigger that triggered this build, if it was
-            # triggered automatically.
-            # @OutputOnly
-        "options": { # Optional arguments to enable specific features of builds. # Special options for this build.
-          "requestedVerifyOption": "A String", # Requested verifiability options.
-          "sourceProvenanceHash": [ # Requested hash for SourceProvenance.
-            "A String",
-          ],
-        },
-        "steps": [ # Describes the operations to be performed on the workspace.
-          { # BuildStep describes a step to perform in the build pipeline.
-            "waitFor": [ # The ID(s) of the step(s) that this build step depends on.
-                # This build step will not start until all the build steps in wait_for
-                # have completed successfully. If wait_for is empty, this build step will
-                # start when all previous build steps in the Build.Steps list have completed
-                # successfully.
-              "A String",
-            ],
-            "name": "A String", # The name of the container image that will run this particular build step.
-                #
-                # If the image is already available in the host's Docker daemon's cache, it
-                # will be run directly. If not, the host will attempt to pull the image
-                # first, using the builder service account's credentials if necessary.
-                #
-                # The Docker daemon's cache will already have the latest versions of all of
-                # the officially supported build steps
-                # ([https://github.com/GoogleCloudPlatform/cloud-builders](https://github.com/GoogleCloudPlatform/cloud-builders)).
-                # The Docker daemon will also have cached many of the layers for some popular
-                # images, like "ubuntu", "debian", but they will be refreshed at the time you
-                # attempt to use them.
-                #
-                # If you built an image in a previous build step, it will be stored in the
-                # host's Docker daemon's cache and is available to use as the name for a
-                # later build step.
-            "args": [ # A list of arguments that will be presented to the step when it is started.
-                #
-                # If the image used to run the step's container has an entrypoint, these args
-                # will be used as arguments to that entrypoint. If the image does not define
-                # an entrypoint, the first element in args will be used as the entrypoint,
-                # and the remainder will be used as arguments.
-              "A String",
-            ],
-            "entrypoint": "A String", # Optional entrypoint to be used instead of the build step image's default
-                # If unset, the image's default will be used.
-            "env": [ # A list of environment variable definitions to be used when running a step.
-                #
-                # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
-                # being given the value "VALUE".
-              "A String",
-            ],
-            "id": "A String", # Optional unique identifier for this build step, used in wait_for to
-                # reference this build step as a dependency.
-            "dir": "A String", # Working directory (relative to project source root) to use when running
-                # this operation's container.
+            "name": "A String", # Name used to push the container image to Google Container Registry, as
+                # presented to `docker push`.
+            "digest": "A String", # Docker Registry 2.0 digest.
           },
         ],
-        "sourceProvenance": { # Provenance of the source. Ways to find the original source, or verify that # A permanent fixed identifier for source.
-            # @OutputOnly
-            # some source was used for this build.
-          "resolvedRepoSource": { # RepoSource describes the location of the source in a Google Cloud Source # A copy of the build's source.repo_source, if exists, with any
-              # revisions resolved.
-              # Repository.
-            "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-                # the build is assumed.
-            "branchName": "A String", # Name of the branch to build.
-            "commitSha": "A String", # Explicit commit SHA to build.
-            "tagName": "A String", # Name of the tag to build.
-            "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
-          },
-          "fileHashes": { # Hash(es) of the build source, which can be used to verify that the original
-              # source integrity was maintained in the build. Note that FileHashes will
-              # only be populated if BuildOptions has requested a SourceProvenanceHash.
+        "buildStepImages": [ # List of build step digests, in the order corresponding to build step
+            # indices.
+          "A String",
+        ],
+        "numArtifacts": "A String", # Number of artifacts uploaded. Only populated when artifacts are uploaded.
+      },
+      "sourceProvenance": { # Provenance of the source. Ways to find the original source, or verify that # Output only. A permanent fixed identifier for source.
+          # some source was used for this build.
+        "resolvedRepoSource": { # Location of the source in a Google Cloud Source Repository. # A copy of the build's `source.repo_source`, if exists, with any
+            # revisions resolved.
+          "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+              # project ID requesting the build is assumed.
+          "commitSha": "A String", # Explicit commit SHA to build.
+          "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+              # assumed.
+          "tagName": "A String", # Name of the tag to build.
+          "branchName": "A String", # Name of the branch to build.
+          "dir": "A String", # Directory, relative to the source root, in which to run the build.
               #
-              # The keys to this map are file paths used as build source and the values
-              # contain the hash values for those files.
-              #
-              # If the build source came in a single package such as a gzipped tarfile
-              # (.tar.gz), the FileHash will be for the single path to that file.
-              # @OutputOnly
-            "a_key": { # Container message for hashes of byte content of files, used in
-                # SourceProvenance messages to verify integrity of source input to the build.
-              "fileHash": [ # Collection of file hashes.
-                { # Container message for hash values.
-                  "type": "A String", # The type of hash that was performed.
-                  "value": "A String", # The hash value.
-                },
-              ],
-            },
-          },
-          "resolvedStorageSource": { # StorageSource describes the location of the source in an archive file in # A copy of the build's source.storage_source, if exists, with any
-              # generations resolved.
-              # Google Cloud Storage.
-            "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
-                # omitted, the latest generation will be used.
-            "object": "A String", # Google Cloud Storage object containing source.
-                #
-                # This object must be a gzipped archive file (.tar.gz) containing source to
-                # build.
-            "bucket": "A String", # Google Cloud Storage bucket containing source (see
-                # [Bucket Name
-                # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+              # This must be a relative path. If a step's `dir` is specified and is an
+              # absolute path, this value is ignored for that step's execution.
+        },
+        "fileHashes": { # Output only. Hash(es) of the build source, which can be used to verify that
+            # the original source integrity was maintained in the build. Note that
+            # `FileHashes` will only be populated if `BuildOptions` has requested a
+            # `SourceProvenanceHash`.
+            #
+            # The keys to this map are file paths used as build source and the values
+            # contain the hash values for those files.
+            #
+            # If the build source came in a single package such as a gzipped tarfile
+            # (`.tar.gz`), the `FileHash` will be for the single path to that file.
+          "a_key": { # Container message for hashes of byte content of files, used in
+              # SourceProvenance messages to verify integrity of source input to the build.
+            "fileHash": [ # Collection of file hashes.
+              { # Container message for hash values.
+                "type": "A String", # The type of hash that was performed.
+                "value": "A String", # The hash value.
+              },
+            ],
           },
         },
-        "logsBucket": "A String", # Google Cloud Storage bucket where logs should be written (see
-            # [Bucket Name
-            # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
-            # Logs file names will be of the format `${logs_bucket}/log-${build_id}.txt`.
+        "resolvedStorageSource": { # Location of the source in an archive file in Google Cloud Storage. # A copy of the build's `source.storage_source`, if exists, with any
+            # generations resolved.
+          "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
+              # omitted, the latest generation will be used.
+          "object": "A String", # Google Cloud Storage object containing the source.
+              #
+              # This object must be a gzipped archive file (`.tar.gz`) containing source to
+              # build.
+          "bucket": "A String", # Google Cloud Storage bucket containing the source (see
+              # [Bucket Name
+              # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+        },
+      },
+      "images": [ # A list of images to be pushed upon the successful completion of all build
+          # steps.
+          #
+          # The images are pushed using the builder service account's credentials.
+          #
+          # The digests of the pushed images will be stored in the `Build` resource's
+          # results field.
+          #
+          # If any of the images fail to be pushed, the build status is marked
+          # `FAILURE`.
+        "A String",
+      ],
+      "id": "A String", # Output only. Unique identifier of the build.
+      "artifacts": { # Artifacts produced by a build that should be uploaded upon # Artifacts produced by the build that should be uploaded upon
+          # successful completion of all build steps.
+          # successful completion of all build steps.
         "images": [ # A list of images to be pushed upon the successful completion of all build
             # steps.
             #
@@ -832,409 +1288,186 @@
             # If any of the images fail to be pushed, the build is marked FAILURE.
           "A String",
         ],
-        "createTime": "A String", # Time at which the request to create the build was received.
-            # @OutputOnly
-        "logUrl": "A String", # URL to logs for this build in Google Cloud Logging.
-            # @OutputOnly
-      },
-      "triggerTemplate": { # RepoSource describes the location of the source in a Google Cloud Source # Template describing the types of source changes to trigger a build.
-          #
-          # Branch and tag names in trigger templates are interpreted as regular
-          # expressions. Any branch or tag change that matches that regular expression
-          # will trigger a build.
-          # Repository.
-        "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-            # the build is assumed.
-        "branchName": "A String", # Name of the branch to build.
-        "commitSha": "A String", # Explicit commit SHA to build.
-        "tagName": "A String", # Name of the tag to build.
-        "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
-      },
-      "id": "A String", # Unique identifier of the trigger.
-          #
-          # @OutputOnly
-    }</pre>
-</div>
-
-<div class="method">
-    <code class="details" id="list">list(projectId, x__xgafv=None)</code>
-  <pre>Lists existing BuildTrigger.
-
-This API is experimental.
-
-Args:
-  projectId: string, ID of the project for which to list BuildTriggers. (required)
-  x__xgafv: string, V1 error format.
-    Allowed values
-      1 - v1 error format
-      2 - v2 error format
-
-Returns:
-  An object of the form:
-
-    { # Response containing existing BuildTriggers.
-    "triggers": [ # BuildTriggers for the project, sorted by create_time descending.
-      { # Configuration for an automated build in response to source repository
-            # changes.
-          "description": "A String", # Human-readable description of this trigger.
-          "filename": "A String", # Path, from the source root, to a file whose contents is used for the
-              # template.
-          "createTime": "A String", # Time when the trigger was created.
-              #
-              # @OutputOnly
-          "substitutions": { # Substitutions data for Build resource.
-            "a_key": "A String",
+        "objects": { # Files in the workspace to upload to Cloud Storage upon successful # A list of objects to be uploaded to Cloud Storage upon successful
+            # completion of all build steps.
+            #
+            # Files in the workspace matching specified paths globs will be uploaded to
+            # the specified Cloud Storage location using the builder service account's
+            # credentials.
+            #
+            # The location and generation of the uploaded objects will be stored in the
+            # Build resource's results field.
+            #
+            # If any objects fail to be pushed, the build is marked FAILURE.
+            # completion of all build steps.
+          "timing": { # Start and end times for a build execution phase. # Output only. Stores timing information for pushing all artifact objects.
+            "endTime": "A String", # End of time span.
+            "startTime": "A String", # Start of time span.
           },
-          "disabled": True or False, # If true, the trigger will never result in a build.
-          "build": { # A build resource in the Container Builder API. # Contents of the build template.
+          "paths": [ # Path globs used to match files in the build's workspace.
+            "A String",
+          ],
+          "location": "A String", # Cloud Storage bucket and optional object path, in the form
+              # "gs://bucket/path/to/somewhere/". (see [Bucket Name
+              # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
               #
-              # At a high level, a Build describes where to find source code, how to build
-              # it (for example, the builder image to run on the source), and what tag to
-              # apply to the built image when it is pushed to Google Container Registry.
-              #
-              # Fields can include the following variables which will be expanded when the
-              # build is created:
-              #
-              # - $PROJECT_ID: the project ID of the build.
-              # - $BUILD_ID: the autogenerated ID of the build.
-              # - $REPO_NAME: the source repository name specified by RepoSource.
-              # - $BRANCH_NAME: the branch name specified by RepoSource.
-              # - $TAG_NAME: the tag name specified by RepoSource.
-              # - $REVISION_ID or $COMMIT_SHA: the commit SHA specified by RepoSource or
-              #   resolved from the specified branch or tag.
-            "finishTime": "A String", # Time at which execution of the build was finished.
-                #
-                # The difference between finish_time and start_time is the duration of the
-                # build's execution.
-                # @OutputOnly
-            "status": "A String", # Status of the build.
-                # @OutputOnly
-            "startTime": "A String", # Time at which execution of the build was started.
-                # @OutputOnly
-            "statusDetail": "A String", # Customer-readable message about the current status.
-                # @OutputOnly
-            "tags": [ # Tags for annotation of a Build. These are not docker tags.
-              "A String",
-            ],
-            "projectId": "A String", # ID of the project.
-                # @OutputOnly.
-            "id": "A String", # Unique identifier of the build.
-                # @OutputOnly
-            "results": { # Results describes the artifacts created by the build pipeline. # Results of the build.
-                # @OutputOnly
-              "images": [ # Images that were built as a part of the build.
-                { # BuiltImage describes an image built by the pipeline.
-                  "name": "A String", # Name used to push the container image to Google Container Registry, as
-                      # presented to `docker push`.
-                  "digest": "A String", # Docker Registry 2.0 digest.
-                },
-              ],
-              "buildStepImages": [ # List of build step digests, in order corresponding to build step indices.
-                "A String",
-              ],
-            },
-            "timeout": "A String", # Amount of time that this build should be allowed to run, to second
-                # granularity. If this amount of time elapses, work on the build will cease
-                # and the build status will be TIMEOUT.
-                #
-                # Default time is ten minutes.
-            "substitutions": { # Substitutions data for Build resource.
-              "a_key": "A String",
-            },
-            "source": { # Source describes the location of the source in a supported storage # Describes where to find the source files to build.
-                # service.
-              "repoSource": { # RepoSource describes the location of the source in a Google Cloud Source # If provided, get source from this location in a Cloud Repo.
-                  # Repository.
-                "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-                    # the build is assumed.
-                "branchName": "A String", # Name of the branch to build.
-                "commitSha": "A String", # Explicit commit SHA to build.
-                "tagName": "A String", # Name of the tag to build.
-                "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
-              },
-              "storageSource": { # StorageSource describes the location of the source in an archive file in # If provided, get the source from this location in in Google Cloud
-                  # Storage.
-                  # Google Cloud Storage.
-                "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
-                    # omitted, the latest generation will be used.
-                "object": "A String", # Google Cloud Storage object containing source.
-                    #
-                    # This object must be a gzipped archive file (.tar.gz) containing source to
-                    # build.
-                "bucket": "A String", # Google Cloud Storage bucket containing source (see
-                    # [Bucket Name
-                    # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
-              },
-            },
-            "buildTriggerId": "A String", # The ID of the BuildTrigger that triggered this build, if it was
-                # triggered automatically.
-                # @OutputOnly
-            "options": { # Optional arguments to enable specific features of builds. # Special options for this build.
-              "requestedVerifyOption": "A String", # Requested verifiability options.
-              "sourceProvenanceHash": [ # Requested hash for SourceProvenance.
-                "A String",
-              ],
-            },
-            "steps": [ # Describes the operations to be performed on the workspace.
-              { # BuildStep describes a step to perform in the build pipeline.
-                "waitFor": [ # The ID(s) of the step(s) that this build step depends on.
-                    # This build step will not start until all the build steps in wait_for
-                    # have completed successfully. If wait_for is empty, this build step will
-                    # start when all previous build steps in the Build.Steps list have completed
-                    # successfully.
-                  "A String",
-                ],
-                "name": "A String", # The name of the container image that will run this particular build step.
-                    #
-                    # If the image is already available in the host's Docker daemon's cache, it
-                    # will be run directly. If not, the host will attempt to pull the image
-                    # first, using the builder service account's credentials if necessary.
-                    #
-                    # The Docker daemon's cache will already have the latest versions of all of
-                    # the officially supported build steps
-                    # ([https://github.com/GoogleCloudPlatform/cloud-builders](https://github.com/GoogleCloudPlatform/cloud-builders)).
-                    # The Docker daemon will also have cached many of the layers for some popular
-                    # images, like "ubuntu", "debian", but they will be refreshed at the time you
-                    # attempt to use them.
-                    #
-                    # If you built an image in a previous build step, it will be stored in the
-                    # host's Docker daemon's cache and is available to use as the name for a
-                    # later build step.
-                "args": [ # A list of arguments that will be presented to the step when it is started.
-                    #
-                    # If the image used to run the step's container has an entrypoint, these args
-                    # will be used as arguments to that entrypoint. If the image does not define
-                    # an entrypoint, the first element in args will be used as the entrypoint,
-                    # and the remainder will be used as arguments.
-                  "A String",
-                ],
-                "entrypoint": "A String", # Optional entrypoint to be used instead of the build step image's default
-                    # If unset, the image's default will be used.
-                "env": [ # A list of environment variable definitions to be used when running a step.
-                    #
-                    # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
-                    # being given the value "VALUE".
-                  "A String",
-                ],
-                "id": "A String", # Optional unique identifier for this build step, used in wait_for to
-                    # reference this build step as a dependency.
-                "dir": "A String", # Working directory (relative to project source root) to use when running
-                    # this operation's container.
-              },
-            ],
-            "sourceProvenance": { # Provenance of the source. Ways to find the original source, or verify that # A permanent fixed identifier for source.
-                # @OutputOnly
-                # some source was used for this build.
-              "resolvedRepoSource": { # RepoSource describes the location of the source in a Google Cloud Source # A copy of the build's source.repo_source, if exists, with any
-                  # revisions resolved.
-                  # Repository.
-                "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-                    # the build is assumed.
-                "branchName": "A String", # Name of the branch to build.
-                "commitSha": "A String", # Explicit commit SHA to build.
-                "tagName": "A String", # Name of the tag to build.
-                "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
-              },
-              "fileHashes": { # Hash(es) of the build source, which can be used to verify that the original
-                  # source integrity was maintained in the build. Note that FileHashes will
-                  # only be populated if BuildOptions has requested a SourceProvenanceHash.
-                  #
-                  # The keys to this map are file paths used as build source and the values
-                  # contain the hash values for those files.
-                  #
-                  # If the build source came in a single package such as a gzipped tarfile
-                  # (.tar.gz), the FileHash will be for the single path to that file.
-                  # @OutputOnly
-                "a_key": { # Container message for hashes of byte content of files, used in
-                    # SourceProvenance messages to verify integrity of source input to the build.
-                  "fileHash": [ # Collection of file hashes.
-                    { # Container message for hash values.
-                      "type": "A String", # The type of hash that was performed.
-                      "value": "A String", # The hash value.
-                    },
-                  ],
-                },
-              },
-              "resolvedStorageSource": { # StorageSource describes the location of the source in an archive file in # A copy of the build's source.storage_source, if exists, with any
-                  # generations resolved.
-                  # Google Cloud Storage.
-                "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
-                    # omitted, the latest generation will be used.
-                "object": "A String", # Google Cloud Storage object containing source.
-                    #
-                    # This object must be a gzipped archive file (.tar.gz) containing source to
-                    # build.
-                "bucket": "A String", # Google Cloud Storage bucket containing source (see
-                    # [Bucket Name
-                    # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
-              },
-            },
-            "logsBucket": "A String", # Google Cloud Storage bucket where logs should be written (see
-                # [Bucket Name
-                # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
-                # Logs file names will be of the format `${logs_bucket}/log-${build_id}.txt`.
-            "images": [ # A list of images to be pushed upon the successful completion of all build
-                # steps.
-                #
-                # The images will be pushed using the builder service account's credentials.
-                #
-                # The digests of the pushed images will be stored in the Build resource's
-                # results field.
-                #
-                # If any of the images fail to be pushed, the build is marked FAILURE.
-              "A String",
-            ],
-            "createTime": "A String", # Time at which the request to create the build was received.
-                # @OutputOnly
-            "logUrl": "A String", # URL to logs for this build in Google Cloud Logging.
-                # @OutputOnly
-          },
-          "triggerTemplate": { # RepoSource describes the location of the source in a Google Cloud Source # Template describing the types of source changes to trigger a build.
-              #
-              # Branch and tag names in trigger templates are interpreted as regular
-              # expressions. Any branch or tag change that matches that regular expression
-              # will trigger a build.
-              # Repository.
-            "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-                # the build is assumed.
-            "branchName": "A String", # Name of the branch to build.
-            "commitSha": "A String", # Explicit commit SHA to build.
-            "tagName": "A String", # Name of the tag to build.
-            "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
-          },
-          "id": "A String", # Unique identifier of the trigger.
-              #
-              # @OutputOnly
+              # Files in the workspace matching any path pattern will be uploaded to
+              # Cloud Storage with this location as a prefix.
         },
-    ],
-  }</pre>
-</div>
-
-<div class="method">
-    <code class="details" id="patch">patch(projectId, triggerId, body, x__xgafv=None)</code>
-  <pre>Updates an BuildTrigger by its project ID and trigger ID.
-
-This API is experimental.
-
-Args:
-  projectId: string, ID of the project that owns the trigger. (required)
-  triggerId: string, ID of the BuildTrigger to update. (required)
-  body: object, The request body. (required)
-    The object takes the form of:
-
-{ # Configuration for an automated build in response to source repository
-      # changes.
-    "description": "A String", # Human-readable description of this trigger.
-    "filename": "A String", # Path, from the source root, to a file whose contents is used for the
-        # template.
-    "createTime": "A String", # Time when the trigger was created.
-        # 
-        # @OutputOnly
-    "substitutions": { # Substitutions data for Build resource.
-      "a_key": "A String",
-    },
-    "disabled": True or False, # If true, the trigger will never result in a build.
-    "build": { # A build resource in the Container Builder API. # Contents of the build template.
-        #
-        # At a high level, a Build describes where to find source code, how to build
-        # it (for example, the builder image to run on the source), and what tag to
-        # apply to the built image when it is pushed to Google Container Registry.
-        #
-        # Fields can include the following variables which will be expanded when the
-        # build is created:
-        #
-        # - $PROJECT_ID: the project ID of the build.
-        # - $BUILD_ID: the autogenerated ID of the build.
-        # - $REPO_NAME: the source repository name specified by RepoSource.
-        # - $BRANCH_NAME: the branch name specified by RepoSource.
-        # - $TAG_NAME: the tag name specified by RepoSource.
-        # - $REVISION_ID or $COMMIT_SHA: the commit SHA specified by RepoSource or
-        #   resolved from the specified branch or tag.
-      "finishTime": "A String", # Time at which execution of the build was finished.
-          #
-          # The difference between finish_time and start_time is the duration of the
-          # build's execution.
-          # @OutputOnly
-      "status": "A String", # Status of the build.
-          # @OutputOnly
-      "startTime": "A String", # Time at which execution of the build was started.
-          # @OutputOnly
-      "statusDetail": "A String", # Customer-readable message about the current status.
-          # @OutputOnly
-      "tags": [ # Tags for annotation of a Build. These are not docker tags.
-        "A String",
-      ],
-      "projectId": "A String", # ID of the project.
-          # @OutputOnly.
-      "id": "A String", # Unique identifier of the build.
-          # @OutputOnly
-      "results": { # Results describes the artifacts created by the build pipeline. # Results of the build.
-          # @OutputOnly
-        "images": [ # Images that were built as a part of the build.
-          { # BuiltImage describes an image built by the pipeline.
-            "name": "A String", # Name used to push the container image to Google Container Registry, as
-                # presented to `docker push`.
-            "digest": "A String", # Docker Registry 2.0 digest.
-          },
-        ],
-        "buildStepImages": [ # List of build step digests, in order corresponding to build step indices.
-          "A String",
-        ],
       },
-      "timeout": "A String", # Amount of time that this build should be allowed to run, to second
-          # granularity. If this amount of time elapses, work on the build will cease
-          # and the build status will be TIMEOUT.
-          #
-          # Default time is ten minutes.
-      "substitutions": { # Substitutions data for Build resource.
+      "projectId": "A String", # Output only. ID of the project.
+      "substitutions": { # Substitutions data for `Build` resource.
         "a_key": "A String",
       },
-      "source": { # Source describes the location of the source in a supported storage # Describes where to find the source files to build.
-          # service.
-        "repoSource": { # RepoSource describes the location of the source in a Google Cloud Source # If provided, get source from this location in a Cloud Repo.
+      "source": { # Location of the source in a supported storage service. # The location of the source files to build.
+        "repoSource": { # Location of the source in a Google Cloud Source Repository. # If provided, get the source from this location in a Cloud Source
             # Repository.
-          "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-              # the build is assumed.
-          "branchName": "A String", # Name of the branch to build.
+          "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+              # project ID requesting the build is assumed.
           "commitSha": "A String", # Explicit commit SHA to build.
+          "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+              # assumed.
           "tagName": "A String", # Name of the tag to build.
-          "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
+          "branchName": "A String", # Name of the branch to build.
+          "dir": "A String", # Directory, relative to the source root, in which to run the build.
+              #
+              # This must be a relative path. If a step's `dir` is specified and is an
+              # absolute path, this value is ignored for that step's execution.
         },
-        "storageSource": { # StorageSource describes the location of the source in an archive file in # If provided, get the source from this location in in Google Cloud
-            # Storage.
-            # Google Cloud Storage.
+        "storageSource": { # Location of the source in an archive file in Google Cloud Storage. # If provided, get the source from this location in Google Cloud Storage.
           "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
               # omitted, the latest generation will be used.
-          "object": "A String", # Google Cloud Storage object containing source.
+          "object": "A String", # Google Cloud Storage object containing the source.
               #
-              # This object must be a gzipped archive file (.tar.gz) containing source to
+              # This object must be a gzipped archive file (`.tar.gz`) containing source to
               # build.
-          "bucket": "A String", # Google Cloud Storage bucket containing source (see
+          "bucket": "A String", # Google Cloud Storage bucket containing the source (see
               # [Bucket Name
               # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
         },
       },
-      "buildTriggerId": "A String", # The ID of the BuildTrigger that triggered this build, if it was
-          # triggered automatically.
-          # @OutputOnly
-      "options": { # Optional arguments to enable specific features of builds. # Special options for this build.
-        "requestedVerifyOption": "A String", # Requested verifiability options.
-        "sourceProvenanceHash": [ # Requested hash for SourceProvenance.
-          "A String",
-        ],
+      "status": "A String", # Output only. Status of the build.
+      "tags": [ # Tags for annotation of a `Build`. These are not docker tags.
+        "A String",
+      ],
+      "statusDetail": "A String", # Output only. Customer-readable message about the current status.
+      "startTime": "A String", # Output only. Time at which execution of the build was started.
+      "timing": { # Output only. Stores timing information for phases of the build. Valid keys
+          # are:
+          #
+          # * BUILD: time to execute all build steps
+          # * PUSH: time to push all specified images.
+          # * FETCHSOURCE: time to fetch source.
+          #
+          # If the build does not specify source or images,
+          # these keys will not be included.
+        "a_key": { # Start and end times for a build execution phase.
+          "endTime": "A String", # End of time span.
+          "startTime": "A String", # Start of time span.
+        },
       },
-      "steps": [ # Describes the operations to be performed on the workspace.
-        { # BuildStep describes a step to perform in the build pipeline.
-          "waitFor": [ # The ID(s) of the step(s) that this build step depends on.
-              # This build step will not start until all the build steps in wait_for
-              # have completed successfully. If wait_for is empty, this build step will
-              # start when all previous build steps in the Build.Steps list have completed
-              # successfully.
+      "createTime": "A String", # Output only. Time at which the request to create the build was received.
+      "finishTime": "A String", # Output only. Time at which execution of the build was finished.
+          #
+          # The difference between finish_time and start_time is the duration of the
+          # build's execution.
+      "buildTriggerId": "A String", # Output only. The ID of the `BuildTrigger` that triggered this build, if it
+          # was triggered automatically.
+      "secrets": [ # Secrets to decrypt using Cloud Key Management Service.
+        { # Pairs a set of secret environment variables containing encrypted
+            # values with the Cloud KMS key to use to decrypt the value.
+          "secretEnv": { # Map of environment variable name to its encrypted value.
+              #
+              # Secret environment variables must be unique across all of a build's
+              # secrets, and must be used by at least one build step. Values can be at most
+              # 64 KB in size. There can be at most 100 secret values across all of a
+              # build's secrets.
+            "a_key": "A String",
+          },
+          "kmsKeyName": "A String", # Cloud KMS key name to use to decrypt these envs.
+        },
+      ],
+      "steps": [ # Required. The operations to be performed on the workspace.
+        { # A step in the build pipeline.
+          "status": "A String", # Output only. Status of the build step. At this time, build step status is
+              # only updated on build completion; step status is not updated in real-time
+              # as the build progresses.
+          "args": [ # A list of arguments that will be presented to the step when it is started.
+              #
+              # If the image used to run the step's container has an entrypoint, the `args`
+              # are used as arguments to that entrypoint. If the image does not define
+              # an entrypoint, the first element in args is used as the entrypoint,
+              # and the remainder will be used as arguments.
             "A String",
           ],
-          "name": "A String", # The name of the container image that will run this particular build step.
+          "env": [ # A list of environment variable definitions to be used when running a step.
               #
-              # If the image is already available in the host's Docker daemon's cache, it
+              # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
+              # being given the value "VALUE".
+            "A String",
+          ],
+          "waitFor": [ # The ID(s) of the step(s) that this build step depends on.
+              # This build step will not start until all the build steps in `wait_for`
+              # have completed successfully. If `wait_for` is empty, this build step will
+              # start when all previous build steps in the `Build.Steps` list have
+              # completed successfully.
+            "A String",
+          ],
+          "timeout": "A String", # Time limit for executing this build step. If not defined, the step has no
+              # time limit and will be allowed to continue to run until either it completes
+              # or the build itself times out.
+          "secretEnv": [ # A list of environment variables which are encrypted using a Cloud Key
+              # Management Service crypto key. These values must be specified in the
+              # build's `Secret`.
+            "A String",
+          ],
+          "entrypoint": "A String", # Entrypoint to be used instead of the build step image's default entrypoint.
+              # If unset, the image's default entrypoint is used.
+          "volumes": [ # List of volumes to mount into the build step.
+              #
+              # Each volume is created as an empty volume prior to execution of the
+              # build step. Upon completion of the build, volumes and their contents are
+              # discarded.
+              #
+              # Using a named volume in only one step is not valid as it is indicative
+              # of a build request with an incorrect configuration.
+            { # Volume describes a Docker container volume which is mounted into build steps
+                # in order to persist files across build step execution.
+              "path": "A String", # Path at which to mount the volume.
+                  #
+                  # Paths must be absolute and cannot conflict with other volume paths on the
+                  # same build step or with certain reserved volume paths.
+              "name": "A String", # Name of the volume to mount.
+                  #
+                  # Volume names must be unique per build step and must be valid names for
+                  # Docker volumes. Each named volume must be used by at least two build steps.
+            },
+          ],
+          "timing": { # Start and end times for a build execution phase. # Output only. Stores timing information for executing this build step.
+            "endTime": "A String", # End of time span.
+            "startTime": "A String", # Start of time span.
+          },
+          "pullTiming": { # Start and end times for a build execution phase. # Output only. Stores timing information for pulling this build step's
+              # builder image only.
+            "endTime": "A String", # End of time span.
+            "startTime": "A String", # Start of time span.
+          },
+          "id": "A String", # Unique identifier for this build step, used in `wait_for` to
+              # reference this build step as a dependency.
+          "dir": "A String", # Working directory to use when running this step's container.
+              #
+              # If this value is a relative path, it is relative to the build's working
+              # directory. If this value is absolute, it may be outside the build's working
+              # directory, in which case the contents of the path may not be persisted
+              # across build step executions, unless a `volume` for that path is specified.
+              #
+              # If the build specifies a `RepoSource` with `dir` and a step with a `dir`,
+              # which specifies an absolute path, the `RepoSource` `dir` is ignored for
+              # the step's execution.
+          "name": "A String", # Required. The name of the container image that will run this particular
+              # build step.
+              #
+              # If the image is available in the host's Docker daemon's cache, it
               # will be run directly. If not, the host will attempt to pull the image
               # first, using the builder service account's credentials if necessary.
               #
@@ -1248,79 +1481,799 @@
               # If you built an image in a previous build step, it will be stored in the
               # host's Docker daemon's cache and is available to use as the name for a
               # later build step.
-          "args": [ # A list of arguments that will be presented to the step when it is started.
-              #
-              # If the image used to run the step's container has an entrypoint, these args
-              # will be used as arguments to that entrypoint. If the image does not define
-              # an entrypoint, the first element in args will be used as the entrypoint,
-              # and the remainder will be used as arguments.
-            "A String",
-          ],
-          "entrypoint": "A String", # Optional entrypoint to be used instead of the build step image's default
-              # If unset, the image's default will be used.
-          "env": [ # A list of environment variable definitions to be used when running a step.
-              #
-              # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
-              # being given the value "VALUE".
-            "A String",
-          ],
-          "id": "A String", # Optional unique identifier for this build step, used in wait_for to
-              # reference this build step as a dependency.
-          "dir": "A String", # Working directory (relative to project source root) to use when running
-              # this operation's container.
         },
       ],
-      "sourceProvenance": { # Provenance of the source. Ways to find the original source, or verify that # A permanent fixed identifier for source.
-          # @OutputOnly
-          # some source was used for this build.
-        "resolvedRepoSource": { # RepoSource describes the location of the source in a Google Cloud Source # A copy of the build's source.repo_source, if exists, with any
-            # revisions resolved.
-            # Repository.
-          "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-              # the build is assumed.
-          "branchName": "A String", # Name of the branch to build.
-          "commitSha": "A String", # Explicit commit SHA to build.
-          "tagName": "A String", # Name of the tag to build.
-          "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
-        },
-        "fileHashes": { # Hash(es) of the build source, which can be used to verify that the original
-            # source integrity was maintained in the build. Note that FileHashes will
-            # only be populated if BuildOptions has requested a SourceProvenanceHash.
-            #
-            # The keys to this map are file paths used as build source and the values
-            # contain the hash values for those files.
-            #
-            # If the build source came in a single package such as a gzipped tarfile
-            # (.tar.gz), the FileHash will be for the single path to that file.
-            # @OutputOnly
-          "a_key": { # Container message for hashes of byte content of files, used in
-              # SourceProvenance messages to verify integrity of source input to the build.
-            "fileHash": [ # Collection of file hashes.
-              { # Container message for hash values.
-                "type": "A String", # The type of hash that was performed.
-                "value": "A String", # The hash value.
-              },
-            ],
-          },
-        },
-        "resolvedStorageSource": { # StorageSource describes the location of the source in an archive file in # A copy of the build's source.storage_source, if exists, with any
-            # generations resolved.
-            # Google Cloud Storage.
-          "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
-              # omitted, the latest generation will be used.
-          "object": "A String", # Google Cloud Storage object containing source.
-              #
-              # This object must be a gzipped archive file (.tar.gz) containing source to
-              # build.
-          "bucket": "A String", # Google Cloud Storage bucket containing source (see
-              # [Bucket Name
-              # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
-        },
-      },
+      "timeout": "A String", # Amount of time that this build should be allowed to run, to second
+          # granularity. If this amount of time elapses, work on the build will cease
+          # and the build status will be `TIMEOUT`.
+          #
+          # Default time is ten minutes.
       "logsBucket": "A String", # Google Cloud Storage bucket where logs should be written (see
           # [Bucket Name
           # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
           # Logs file names will be of the format `${logs_bucket}/log-${build_id}.txt`.
+      "options": { # Optional arguments to enable specific features of builds. # Special options for this build.
+        "substitutionOption": "A String", # Option to specify behavior when there is an error in the substitution
+            # checks.
+        "logging": "A String", # Option to specify the logging mode, which determines where the logs are
+            # stored.
+        "volumes": [ # Global list of volumes to mount for ALL build steps
+            #
+            # Each volume is created as an empty volume prior to starting the build
+            # process. Upon completion of the build, volumes and their contents are
+            # discarded. Global volume names and paths cannot conflict with the volumes
+            # defined a build step.
+            #
+            # Using a global volume in a build with only one step is not valid as
+            # it is indicative of a build request with an incorrect configuration.
+          { # Volume describes a Docker container volume which is mounted into build steps
+              # in order to persist files across build step execution.
+            "path": "A String", # Path at which to mount the volume.
+                #
+                # Paths must be absolute and cannot conflict with other volume paths on the
+                # same build step or with certain reserved volume paths.
+            "name": "A String", # Name of the volume to mount.
+                #
+                # Volume names must be unique per build step and must be valid names for
+                # Docker volumes. Each named volume must be used by at least two build steps.
+          },
+        ],
+        "workerPool": "A String", # Option to specify a `WorkerPool` for the build. User specifies the pool
+            # with the format "[WORKERPOOL_PROJECT_ID]/[WORKERPOOL_NAME]".
+            # This is an experimental field.
+        "logStreamingOption": "A String", # Option to define build log streaming behavior to Google Cloud
+            # Storage.
+        "sourceProvenanceHash": [ # Requested hash for SourceProvenance.
+          "A String",
+        ],
+        "secretEnv": [ # A list of global environment variables, which are encrypted using a Cloud
+            # Key Management Service crypto key. These values must be specified in the
+            # build's `Secret`. These variables will be available to all build steps
+            # in this build.
+          "A String",
+        ],
+        "diskSizeGb": "A String", # Requested disk size for the VM that runs the build. Note that this is *NOT*
+            # "disk free"; some of the space will be used by the operating system and
+            # build utilities. Also note that this is the minimum disk size that will be
+            # allocated for the build -- the build may run with a larger disk than
+            # requested. At present, the maximum disk size is 1000GB; builds that request
+            # more than the maximum are rejected with an error.
+        "env": [ # A list of global environment variable definitions that will exist for all
+            # build steps in this build. If a variable is defined in both globally and in
+            # a build step, the variable will use the build step value.
+            #
+            # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
+            # being given the value "VALUE".
+          "A String",
+        ],
+        "requestedVerifyOption": "A String", # Requested verifiability options.
+        "machineType": "A String", # Compute Engine machine type on which to run the build.
+      },
+      "logUrl": "A String", # Output only. URL to logs for this build in Google Cloud Console.
+    },
+    "includedFiles": [ # If any of the files altered in the commit pass the ignored_files
+        # filter and included_files is empty, then as far as this filter is
+        # concerned, we should trigger the build.
+        #
+        # If any of the files altered in the commit pass the ignored_files
+        # filter and included_files is not empty, then we make sure that at
+        # least one of those files matches a included_files glob. If not,
+        # then we do not trigger a build.
+      "A String",
+    ],
+    "triggerTemplate": { # Location of the source in a Google Cloud Source Repository. # Template describing the types of source changes to trigger a build.
+        #
+        # Branch and tag names in trigger templates are interpreted as regular
+        # expressions. Any branch or tag change that matches that regular expression
+        # will trigger a build.
+      "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+          # project ID requesting the build is assumed.
+      "commitSha": "A String", # Explicit commit SHA to build.
+      "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+          # assumed.
+      "tagName": "A String", # Name of the tag to build.
+      "branchName": "A String", # Name of the branch to build.
+      "dir": "A String", # Directory, relative to the source root, in which to run the build.
+          #
+          # This must be a relative path. If a step's `dir` is specified and is an
+          # absolute path, this value is ignored for that step's execution.
+    },
+    "id": "A String", # Output only. Unique identifier of the trigger.
+  }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="list">list(projectId, pageSize=None, pageToken=None, x__xgafv=None)</code>
+  <pre>Lists existing `BuildTrigger`s.
+
+This API is experimental.
+
+Args:
+  projectId: string, ID of the project for which to list BuildTriggers. (required)
+  pageSize: integer, Number of results to return in the list.
+  pageToken: string, Token to provide to skip to a particular spot in the list.
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # Response containing existing `BuildTriggers`.
+    "nextPageToken": "A String", # Token to receive the next page of results.
+    "triggers": [ # `BuildTriggers` for the project, sorted by `create_time` descending.
+      { # Configuration for an automated build in response to source repository
+          # changes.
+        "github": { # GitHubEventsConfig describes the configuration of a trigger that creates a # GitHubEventsConfig describes the configuration of a trigger that creates
+            # a build whenever a GitHub event is received.
+            # build whenever a GitHub event is received.
+            #
+            # This message is experimental.
+          "name": "A String", # Name of the repository.
+          "pullRequest": { # PullRequestFilter contains filter properties for matching GitHub Pull # filter to match changes in pull requests.
+              # Requests.
+            "commentControl": "A String", # Whether to block builds on a "/gcbrun" comment from a repository owner or
+                # collaborator.
+            "branch": "A String", # Regex of branches to match.
+                #
+                # The syntax of the regular expressions accepted is the syntax accepted by
+                # RE2 and described at https://github.com/google/re2/wiki/Syntax
+          },
+          "owner": "A String", # Owner of the repository.
+          "push": { # Push contains filter properties for matching GitHub git pushes. # filter to match changes in refs like branches, tags.
+            "tag": "A String", # Regexes of tags to match.
+                #
+                # The syntax of the regular expressions accepted is the syntax accepted by
+                # RE2 and described at https://github.com/google/re2/wiki/Syntax
+            "branch": "A String", # Regexes of branches to match.
+                #
+                # The syntax of the regular expressions accepted is the syntax accepted by
+                # RE2 and described at https://github.com/google/re2/wiki/Syntax
+          },
+          "installationId": "A String", # The installationID that emmits the GitHub event.
+          "checkSuite": { # A CheckSuiteFilter is a filter that indicates that we should build on all # Output only. Indicates that a build was generated from a check suite
+              # event.
+              # check suite events.
+          },
+        },
+        "description": "A String", # Human-readable description of this trigger.
+        "tags": [ # Tags for annotation of a `BuildTrigger`
+          "A String",
+        ],
+        "ignoredFiles": [ # ignored_files and included_files are file glob matches using
+            # http://godoc/pkg/path/filepath#Match extended with support for "**".
+            #
+            # If ignored_files and changed files are both empty, then they are
+            # not used to determine whether or not to trigger a build.
+            #
+            # If ignored_files is not empty, then we ignore any files that match
+            # any of the ignored_file globs. If the change has no files that are
+            # outside of the ignored_files globs, then we do not trigger a build.
+          "A String",
+        ],
+        "filename": "A String", # Path, from the source root, to a file whose contents is used for the
+            # template.
+        "createTime": "A String", # Output only. Time when the trigger was created.
+        "substitutions": { # Substitutions data for Build resource.
+          "a_key": "A String",
+        },
+        "disabled": True or False, # If true, the trigger will never result in a build.
+        "build": { # A build resource in the Cloud Build API. # Contents of the build template.
+            #
+            # At a high level, a `Build` describes where to find source code, how to build
+            # it (for example, the builder image to run on the source), and where to store
+            # the built artifacts.
+            #
+            # Fields can include the following variables, which will be expanded when the
+            # build is created:
+            #
+            # - $PROJECT_ID: the project ID of the build.
+            # - $BUILD_ID: the autogenerated ID of the build.
+            # - $REPO_NAME: the source repository name specified by RepoSource.
+            # - $BRANCH_NAME: the branch name specified by RepoSource.
+            # - $TAG_NAME: the tag name specified by RepoSource.
+            # - $REVISION_ID or $COMMIT_SHA: the commit SHA specified by RepoSource or
+            #   resolved from the specified branch or tag.
+            # - $SHORT_SHA: first 7 characters of $REVISION_ID or $COMMIT_SHA.
+          "results": { # Artifacts created by the build pipeline. # Output only. Results of the build.
+            "buildStepOutputs": [ # List of build step outputs, produced by builder images, in the order
+                # corresponding to build step indices.
+                #
+                # [Cloud Builders](https://cloud.google.com/cloud-build/docs/cloud-builders)
+                # can produce this output by writing to `$BUILDER_OUTPUT/output`.
+                # Only the first 4KB of data is stored.
+              "A String",
+            ],
+            "artifactTiming": { # Start and end times for a build execution phase. # Time to push all non-container artifacts.
+              "endTime": "A String", # End of time span.
+              "startTime": "A String", # Start of time span.
+            },
+            "artifactManifest": "A String", # Path to the artifact manifest. Only populated when artifacts are uploaded.
+            "images": [ # Container images that were built as a part of the build.
+              { # An image built by the pipeline.
+                "pushTiming": { # Start and end times for a build execution phase. # Output only. Stores timing information for pushing the specified image.
+                  "endTime": "A String", # End of time span.
+                  "startTime": "A String", # Start of time span.
+                },
+                "name": "A String", # Name used to push the container image to Google Container Registry, as
+                    # presented to `docker push`.
+                "digest": "A String", # Docker Registry 2.0 digest.
+              },
+            ],
+            "buildStepImages": [ # List of build step digests, in the order corresponding to build step
+                # indices.
+              "A String",
+            ],
+            "numArtifacts": "A String", # Number of artifacts uploaded. Only populated when artifacts are uploaded.
+          },
+          "sourceProvenance": { # Provenance of the source. Ways to find the original source, or verify that # Output only. A permanent fixed identifier for source.
+              # some source was used for this build.
+            "resolvedRepoSource": { # Location of the source in a Google Cloud Source Repository. # A copy of the build's `source.repo_source`, if exists, with any
+                # revisions resolved.
+              "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+                  # project ID requesting the build is assumed.
+              "commitSha": "A String", # Explicit commit SHA to build.
+              "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+                  # assumed.
+              "tagName": "A String", # Name of the tag to build.
+              "branchName": "A String", # Name of the branch to build.
+              "dir": "A String", # Directory, relative to the source root, in which to run the build.
+                  #
+                  # This must be a relative path. If a step's `dir` is specified and is an
+                  # absolute path, this value is ignored for that step's execution.
+            },
+            "fileHashes": { # Output only. Hash(es) of the build source, which can be used to verify that
+                # the original source integrity was maintained in the build. Note that
+                # `FileHashes` will only be populated if `BuildOptions` has requested a
+                # `SourceProvenanceHash`.
+                #
+                # The keys to this map are file paths used as build source and the values
+                # contain the hash values for those files.
+                #
+                # If the build source came in a single package such as a gzipped tarfile
+                # (`.tar.gz`), the `FileHash` will be for the single path to that file.
+              "a_key": { # Container message for hashes of byte content of files, used in
+                  # SourceProvenance messages to verify integrity of source input to the build.
+                "fileHash": [ # Collection of file hashes.
+                  { # Container message for hash values.
+                    "type": "A String", # The type of hash that was performed.
+                    "value": "A String", # The hash value.
+                  },
+                ],
+              },
+            },
+            "resolvedStorageSource": { # Location of the source in an archive file in Google Cloud Storage. # A copy of the build's `source.storage_source`, if exists, with any
+                # generations resolved.
+              "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
+                  # omitted, the latest generation will be used.
+              "object": "A String", # Google Cloud Storage object containing the source.
+                  #
+                  # This object must be a gzipped archive file (`.tar.gz`) containing source to
+                  # build.
+              "bucket": "A String", # Google Cloud Storage bucket containing the source (see
+                  # [Bucket Name
+                  # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+            },
+          },
+          "images": [ # A list of images to be pushed upon the successful completion of all build
+              # steps.
+              #
+              # The images are pushed using the builder service account's credentials.
+              #
+              # The digests of the pushed images will be stored in the `Build` resource's
+              # results field.
+              #
+              # If any of the images fail to be pushed, the build status is marked
+              # `FAILURE`.
+            "A String",
+          ],
+          "id": "A String", # Output only. Unique identifier of the build.
+          "artifacts": { # Artifacts produced by a build that should be uploaded upon # Artifacts produced by the build that should be uploaded upon
+              # successful completion of all build steps.
+              # successful completion of all build steps.
+            "images": [ # A list of images to be pushed upon the successful completion of all build
+                # steps.
+                #
+                # The images will be pushed using the builder service account's credentials.
+                #
+                # The digests of the pushed images will be stored in the Build resource's
+                # results field.
+                #
+                # If any of the images fail to be pushed, the build is marked FAILURE.
+              "A String",
+            ],
+            "objects": { # Files in the workspace to upload to Cloud Storage upon successful # A list of objects to be uploaded to Cloud Storage upon successful
+                # completion of all build steps.
+                #
+                # Files in the workspace matching specified paths globs will be uploaded to
+                # the specified Cloud Storage location using the builder service account's
+                # credentials.
+                #
+                # The location and generation of the uploaded objects will be stored in the
+                # Build resource's results field.
+                #
+                # If any objects fail to be pushed, the build is marked FAILURE.
+                # completion of all build steps.
+              "timing": { # Start and end times for a build execution phase. # Output only. Stores timing information for pushing all artifact objects.
+                "endTime": "A String", # End of time span.
+                "startTime": "A String", # Start of time span.
+              },
+              "paths": [ # Path globs used to match files in the build's workspace.
+                "A String",
+              ],
+              "location": "A String", # Cloud Storage bucket and optional object path, in the form
+                  # "gs://bucket/path/to/somewhere/". (see [Bucket Name
+                  # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+                  #
+                  # Files in the workspace matching any path pattern will be uploaded to
+                  # Cloud Storage with this location as a prefix.
+            },
+          },
+          "projectId": "A String", # Output only. ID of the project.
+          "substitutions": { # Substitutions data for `Build` resource.
+            "a_key": "A String",
+          },
+          "source": { # Location of the source in a supported storage service. # The location of the source files to build.
+            "repoSource": { # Location of the source in a Google Cloud Source Repository. # If provided, get the source from this location in a Cloud Source
+                # Repository.
+              "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+                  # project ID requesting the build is assumed.
+              "commitSha": "A String", # Explicit commit SHA to build.
+              "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+                  # assumed.
+              "tagName": "A String", # Name of the tag to build.
+              "branchName": "A String", # Name of the branch to build.
+              "dir": "A String", # Directory, relative to the source root, in which to run the build.
+                  #
+                  # This must be a relative path. If a step's `dir` is specified and is an
+                  # absolute path, this value is ignored for that step's execution.
+            },
+            "storageSource": { # Location of the source in an archive file in Google Cloud Storage. # If provided, get the source from this location in Google Cloud Storage.
+              "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
+                  # omitted, the latest generation will be used.
+              "object": "A String", # Google Cloud Storage object containing the source.
+                  #
+                  # This object must be a gzipped archive file (`.tar.gz`) containing source to
+                  # build.
+              "bucket": "A String", # Google Cloud Storage bucket containing the source (see
+                  # [Bucket Name
+                  # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+            },
+          },
+          "status": "A String", # Output only. Status of the build.
+          "tags": [ # Tags for annotation of a `Build`. These are not docker tags.
+            "A String",
+          ],
+          "statusDetail": "A String", # Output only. Customer-readable message about the current status.
+          "startTime": "A String", # Output only. Time at which execution of the build was started.
+          "timing": { # Output only. Stores timing information for phases of the build. Valid keys
+              # are:
+              #
+              # * BUILD: time to execute all build steps
+              # * PUSH: time to push all specified images.
+              # * FETCHSOURCE: time to fetch source.
+              #
+              # If the build does not specify source or images,
+              # these keys will not be included.
+            "a_key": { # Start and end times for a build execution phase.
+              "endTime": "A String", # End of time span.
+              "startTime": "A String", # Start of time span.
+            },
+          },
+          "createTime": "A String", # Output only. Time at which the request to create the build was received.
+          "finishTime": "A String", # Output only. Time at which execution of the build was finished.
+              #
+              # The difference between finish_time and start_time is the duration of the
+              # build's execution.
+          "buildTriggerId": "A String", # Output only. The ID of the `BuildTrigger` that triggered this build, if it
+              # was triggered automatically.
+          "secrets": [ # Secrets to decrypt using Cloud Key Management Service.
+            { # Pairs a set of secret environment variables containing encrypted
+                # values with the Cloud KMS key to use to decrypt the value.
+              "secretEnv": { # Map of environment variable name to its encrypted value.
+                  #
+                  # Secret environment variables must be unique across all of a build's
+                  # secrets, and must be used by at least one build step. Values can be at most
+                  # 64 KB in size. There can be at most 100 secret values across all of a
+                  # build's secrets.
+                "a_key": "A String",
+              },
+              "kmsKeyName": "A String", # Cloud KMS key name to use to decrypt these envs.
+            },
+          ],
+          "steps": [ # Required. The operations to be performed on the workspace.
+            { # A step in the build pipeline.
+              "status": "A String", # Output only. Status of the build step. At this time, build step status is
+                  # only updated on build completion; step status is not updated in real-time
+                  # as the build progresses.
+              "args": [ # A list of arguments that will be presented to the step when it is started.
+                  #
+                  # If the image used to run the step's container has an entrypoint, the `args`
+                  # are used as arguments to that entrypoint. If the image does not define
+                  # an entrypoint, the first element in args is used as the entrypoint,
+                  # and the remainder will be used as arguments.
+                "A String",
+              ],
+              "env": [ # A list of environment variable definitions to be used when running a step.
+                  #
+                  # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
+                  # being given the value "VALUE".
+                "A String",
+              ],
+              "waitFor": [ # The ID(s) of the step(s) that this build step depends on.
+                  # This build step will not start until all the build steps in `wait_for`
+                  # have completed successfully. If `wait_for` is empty, this build step will
+                  # start when all previous build steps in the `Build.Steps` list have
+                  # completed successfully.
+                "A String",
+              ],
+              "timeout": "A String", # Time limit for executing this build step. If not defined, the step has no
+                  # time limit and will be allowed to continue to run until either it completes
+                  # or the build itself times out.
+              "secretEnv": [ # A list of environment variables which are encrypted using a Cloud Key
+                  # Management Service crypto key. These values must be specified in the
+                  # build's `Secret`.
+                "A String",
+              ],
+              "entrypoint": "A String", # Entrypoint to be used instead of the build step image's default entrypoint.
+                  # If unset, the image's default entrypoint is used.
+              "volumes": [ # List of volumes to mount into the build step.
+                  #
+                  # Each volume is created as an empty volume prior to execution of the
+                  # build step. Upon completion of the build, volumes and their contents are
+                  # discarded.
+                  #
+                  # Using a named volume in only one step is not valid as it is indicative
+                  # of a build request with an incorrect configuration.
+                { # Volume describes a Docker container volume which is mounted into build steps
+                    # in order to persist files across build step execution.
+                  "path": "A String", # Path at which to mount the volume.
+                      #
+                      # Paths must be absolute and cannot conflict with other volume paths on the
+                      # same build step or with certain reserved volume paths.
+                  "name": "A String", # Name of the volume to mount.
+                      #
+                      # Volume names must be unique per build step and must be valid names for
+                      # Docker volumes. Each named volume must be used by at least two build steps.
+                },
+              ],
+              "timing": { # Start and end times for a build execution phase. # Output only. Stores timing information for executing this build step.
+                "endTime": "A String", # End of time span.
+                "startTime": "A String", # Start of time span.
+              },
+              "pullTiming": { # Start and end times for a build execution phase. # Output only. Stores timing information for pulling this build step's
+                  # builder image only.
+                "endTime": "A String", # End of time span.
+                "startTime": "A String", # Start of time span.
+              },
+              "id": "A String", # Unique identifier for this build step, used in `wait_for` to
+                  # reference this build step as a dependency.
+              "dir": "A String", # Working directory to use when running this step's container.
+                  #
+                  # If this value is a relative path, it is relative to the build's working
+                  # directory. If this value is absolute, it may be outside the build's working
+                  # directory, in which case the contents of the path may not be persisted
+                  # across build step executions, unless a `volume` for that path is specified.
+                  #
+                  # If the build specifies a `RepoSource` with `dir` and a step with a `dir`,
+                  # which specifies an absolute path, the `RepoSource` `dir` is ignored for
+                  # the step's execution.
+              "name": "A String", # Required. The name of the container image that will run this particular
+                  # build step.
+                  #
+                  # If the image is available in the host's Docker daemon's cache, it
+                  # will be run directly. If not, the host will attempt to pull the image
+                  # first, using the builder service account's credentials if necessary.
+                  #
+                  # The Docker daemon's cache will already have the latest versions of all of
+                  # the officially supported build steps
+                  # ([https://github.com/GoogleCloudPlatform/cloud-builders](https://github.com/GoogleCloudPlatform/cloud-builders)).
+                  # The Docker daemon will also have cached many of the layers for some popular
+                  # images, like "ubuntu", "debian", but they will be refreshed at the time you
+                  # attempt to use them.
+                  #
+                  # If you built an image in a previous build step, it will be stored in the
+                  # host's Docker daemon's cache and is available to use as the name for a
+                  # later build step.
+            },
+          ],
+          "timeout": "A String", # Amount of time that this build should be allowed to run, to second
+              # granularity. If this amount of time elapses, work on the build will cease
+              # and the build status will be `TIMEOUT`.
+              #
+              # Default time is ten minutes.
+          "logsBucket": "A String", # Google Cloud Storage bucket where logs should be written (see
+              # [Bucket Name
+              # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+              # Logs file names will be of the format `${logs_bucket}/log-${build_id}.txt`.
+          "options": { # Optional arguments to enable specific features of builds. # Special options for this build.
+            "substitutionOption": "A String", # Option to specify behavior when there is an error in the substitution
+                # checks.
+            "logging": "A String", # Option to specify the logging mode, which determines where the logs are
+                # stored.
+            "volumes": [ # Global list of volumes to mount for ALL build steps
+                #
+                # Each volume is created as an empty volume prior to starting the build
+                # process. Upon completion of the build, volumes and their contents are
+                # discarded. Global volume names and paths cannot conflict with the volumes
+                # defined a build step.
+                #
+                # Using a global volume in a build with only one step is not valid as
+                # it is indicative of a build request with an incorrect configuration.
+              { # Volume describes a Docker container volume which is mounted into build steps
+                  # in order to persist files across build step execution.
+                "path": "A String", # Path at which to mount the volume.
+                    #
+                    # Paths must be absolute and cannot conflict with other volume paths on the
+                    # same build step or with certain reserved volume paths.
+                "name": "A String", # Name of the volume to mount.
+                    #
+                    # Volume names must be unique per build step and must be valid names for
+                    # Docker volumes. Each named volume must be used by at least two build steps.
+              },
+            ],
+            "workerPool": "A String", # Option to specify a `WorkerPool` for the build. User specifies the pool
+                # with the format "[WORKERPOOL_PROJECT_ID]/[WORKERPOOL_NAME]".
+                # This is an experimental field.
+            "logStreamingOption": "A String", # Option to define build log streaming behavior to Google Cloud
+                # Storage.
+            "sourceProvenanceHash": [ # Requested hash for SourceProvenance.
+              "A String",
+            ],
+            "secretEnv": [ # A list of global environment variables, which are encrypted using a Cloud
+                # Key Management Service crypto key. These values must be specified in the
+                # build's `Secret`. These variables will be available to all build steps
+                # in this build.
+              "A String",
+            ],
+            "diskSizeGb": "A String", # Requested disk size for the VM that runs the build. Note that this is *NOT*
+                # "disk free"; some of the space will be used by the operating system and
+                # build utilities. Also note that this is the minimum disk size that will be
+                # allocated for the build -- the build may run with a larger disk than
+                # requested. At present, the maximum disk size is 1000GB; builds that request
+                # more than the maximum are rejected with an error.
+            "env": [ # A list of global environment variable definitions that will exist for all
+                # build steps in this build. If a variable is defined in both globally and in
+                # a build step, the variable will use the build step value.
+                #
+                # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
+                # being given the value "VALUE".
+              "A String",
+            ],
+            "requestedVerifyOption": "A String", # Requested verifiability options.
+            "machineType": "A String", # Compute Engine machine type on which to run the build.
+          },
+          "logUrl": "A String", # Output only. URL to logs for this build in Google Cloud Console.
+        },
+        "includedFiles": [ # If any of the files altered in the commit pass the ignored_files
+            # filter and included_files is empty, then as far as this filter is
+            # concerned, we should trigger the build.
+            #
+            # If any of the files altered in the commit pass the ignored_files
+            # filter and included_files is not empty, then we make sure that at
+            # least one of those files matches a included_files glob. If not,
+            # then we do not trigger a build.
+          "A String",
+        ],
+        "triggerTemplate": { # Location of the source in a Google Cloud Source Repository. # Template describing the types of source changes to trigger a build.
+            #
+            # Branch and tag names in trigger templates are interpreted as regular
+            # expressions. Any branch or tag change that matches that regular expression
+            # will trigger a build.
+          "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+              # project ID requesting the build is assumed.
+          "commitSha": "A String", # Explicit commit SHA to build.
+          "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+              # assumed.
+          "tagName": "A String", # Name of the tag to build.
+          "branchName": "A String", # Name of the branch to build.
+          "dir": "A String", # Directory, relative to the source root, in which to run the build.
+              #
+              # This must be a relative path. If a step's `dir` is specified and is an
+              # absolute path, this value is ignored for that step's execution.
+        },
+        "id": "A String", # Output only. Unique identifier of the trigger.
+      },
+    ],
+  }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="list_next">list_next(previous_request, previous_response)</code>
+  <pre>Retrieves the next page of results.
+
+Args:
+  previous_request: The request for the previous page. (required)
+  previous_response: The response from the request for the previous page. (required)
+
+Returns:
+  A request object that you can call 'execute()' on to request the next
+  page. Returns None if there are no more items in the collection.
+    </pre>
+</div>
+
+<div class="method">
+    <code class="details" id="patch">patch(projectId, triggerId, body, x__xgafv=None)</code>
+  <pre>Updates a `BuildTrigger` by its project ID and trigger ID.
+
+This API is experimental.
+
+Args:
+  projectId: string, ID of the project that owns the trigger. (required)
+  triggerId: string, ID of the `BuildTrigger` to update. (required)
+  body: object, The request body. (required)
+    The object takes the form of:
+
+{ # Configuration for an automated build in response to source repository
+    # changes.
+  "github": { # GitHubEventsConfig describes the configuration of a trigger that creates a # GitHubEventsConfig describes the configuration of a trigger that creates
+      # a build whenever a GitHub event is received.
+      # build whenever a GitHub event is received.
+      #
+      # This message is experimental.
+    "name": "A String", # Name of the repository.
+    "pullRequest": { # PullRequestFilter contains filter properties for matching GitHub Pull # filter to match changes in pull requests.
+        # Requests.
+      "commentControl": "A String", # Whether to block builds on a "/gcbrun" comment from a repository owner or
+          # collaborator.
+      "branch": "A String", # Regex of branches to match.
+          #
+          # The syntax of the regular expressions accepted is the syntax accepted by
+          # RE2 and described at https://github.com/google/re2/wiki/Syntax
+    },
+    "owner": "A String", # Owner of the repository.
+    "push": { # Push contains filter properties for matching GitHub git pushes. # filter to match changes in refs like branches, tags.
+      "tag": "A String", # Regexes of tags to match.
+          #
+          # The syntax of the regular expressions accepted is the syntax accepted by
+          # RE2 and described at https://github.com/google/re2/wiki/Syntax
+      "branch": "A String", # Regexes of branches to match.
+          #
+          # The syntax of the regular expressions accepted is the syntax accepted by
+          # RE2 and described at https://github.com/google/re2/wiki/Syntax
+    },
+    "installationId": "A String", # The installationID that emmits the GitHub event.
+    "checkSuite": { # A CheckSuiteFilter is a filter that indicates that we should build on all # Output only. Indicates that a build was generated from a check suite
+        # event.
+        # check suite events.
+    },
+  },
+  "description": "A String", # Human-readable description of this trigger.
+  "tags": [ # Tags for annotation of a `BuildTrigger`
+    "A String",
+  ],
+  "ignoredFiles": [ # ignored_files and included_files are file glob matches using
+      # http://godoc/pkg/path/filepath#Match extended with support for "**".
+      # 
+      # If ignored_files and changed files are both empty, then they are
+      # not used to determine whether or not to trigger a build.
+      # 
+      # If ignored_files is not empty, then we ignore any files that match
+      # any of the ignored_file globs. If the change has no files that are
+      # outside of the ignored_files globs, then we do not trigger a build.
+    "A String",
+  ],
+  "filename": "A String", # Path, from the source root, to a file whose contents is used for the
+      # template.
+  "createTime": "A String", # Output only. Time when the trigger was created.
+  "substitutions": { # Substitutions data for Build resource.
+    "a_key": "A String",
+  },
+  "disabled": True or False, # If true, the trigger will never result in a build.
+  "build": { # A build resource in the Cloud Build API. # Contents of the build template.
+      #
+      # At a high level, a `Build` describes where to find source code, how to build
+      # it (for example, the builder image to run on the source), and where to store
+      # the built artifacts.
+      #
+      # Fields can include the following variables, which will be expanded when the
+      # build is created:
+      #
+      # - $PROJECT_ID: the project ID of the build.
+      # - $BUILD_ID: the autogenerated ID of the build.
+      # - $REPO_NAME: the source repository name specified by RepoSource.
+      # - $BRANCH_NAME: the branch name specified by RepoSource.
+      # - $TAG_NAME: the tag name specified by RepoSource.
+      # - $REVISION_ID or $COMMIT_SHA: the commit SHA specified by RepoSource or
+      #   resolved from the specified branch or tag.
+      # - $SHORT_SHA: first 7 characters of $REVISION_ID or $COMMIT_SHA.
+    "results": { # Artifacts created by the build pipeline. # Output only. Results of the build.
+      "buildStepOutputs": [ # List of build step outputs, produced by builder images, in the order
+          # corresponding to build step indices.
+          #
+          # [Cloud Builders](https://cloud.google.com/cloud-build/docs/cloud-builders)
+          # can produce this output by writing to `$BUILDER_OUTPUT/output`.
+          # Only the first 4KB of data is stored.
+        "A String",
+      ],
+      "artifactTiming": { # Start and end times for a build execution phase. # Time to push all non-container artifacts.
+        "endTime": "A String", # End of time span.
+        "startTime": "A String", # Start of time span.
+      },
+      "artifactManifest": "A String", # Path to the artifact manifest. Only populated when artifacts are uploaded.
+      "images": [ # Container images that were built as a part of the build.
+        { # An image built by the pipeline.
+          "pushTiming": { # Start and end times for a build execution phase. # Output only. Stores timing information for pushing the specified image.
+            "endTime": "A String", # End of time span.
+            "startTime": "A String", # Start of time span.
+          },
+          "name": "A String", # Name used to push the container image to Google Container Registry, as
+              # presented to `docker push`.
+          "digest": "A String", # Docker Registry 2.0 digest.
+        },
+      ],
+      "buildStepImages": [ # List of build step digests, in the order corresponding to build step
+          # indices.
+        "A String",
+      ],
+      "numArtifacts": "A String", # Number of artifacts uploaded. Only populated when artifacts are uploaded.
+    },
+    "sourceProvenance": { # Provenance of the source. Ways to find the original source, or verify that # Output only. A permanent fixed identifier for source.
+        # some source was used for this build.
+      "resolvedRepoSource": { # Location of the source in a Google Cloud Source Repository. # A copy of the build's `source.repo_source`, if exists, with any
+          # revisions resolved.
+        "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+            # project ID requesting the build is assumed.
+        "commitSha": "A String", # Explicit commit SHA to build.
+        "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+            # assumed.
+        "tagName": "A String", # Name of the tag to build.
+        "branchName": "A String", # Name of the branch to build.
+        "dir": "A String", # Directory, relative to the source root, in which to run the build.
+            #
+            # This must be a relative path. If a step's `dir` is specified and is an
+            # absolute path, this value is ignored for that step's execution.
+      },
+      "fileHashes": { # Output only. Hash(es) of the build source, which can be used to verify that
+          # the original source integrity was maintained in the build. Note that
+          # `FileHashes` will only be populated if `BuildOptions` has requested a
+          # `SourceProvenanceHash`.
+          #
+          # The keys to this map are file paths used as build source and the values
+          # contain the hash values for those files.
+          #
+          # If the build source came in a single package such as a gzipped tarfile
+          # (`.tar.gz`), the `FileHash` will be for the single path to that file.
+        "a_key": { # Container message for hashes of byte content of files, used in
+            # SourceProvenance messages to verify integrity of source input to the build.
+          "fileHash": [ # Collection of file hashes.
+            { # Container message for hash values.
+              "type": "A String", # The type of hash that was performed.
+              "value": "A String", # The hash value.
+            },
+          ],
+        },
+      },
+      "resolvedStorageSource": { # Location of the source in an archive file in Google Cloud Storage. # A copy of the build's `source.storage_source`, if exists, with any
+          # generations resolved.
+        "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
+            # omitted, the latest generation will be used.
+        "object": "A String", # Google Cloud Storage object containing the source.
+            #
+            # This object must be a gzipped archive file (`.tar.gz`) containing source to
+            # build.
+        "bucket": "A String", # Google Cloud Storage bucket containing the source (see
+            # [Bucket Name
+            # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+      },
+    },
+    "images": [ # A list of images to be pushed upon the successful completion of all build
+        # steps.
+        #
+        # The images are pushed using the builder service account's credentials.
+        #
+        # The digests of the pushed images will be stored in the `Build` resource's
+        # results field.
+        #
+        # If any of the images fail to be pushed, the build status is marked
+        # `FAILURE`.
+      "A String",
+    ],
+    "id": "A String", # Output only. Unique identifier of the build.
+    "artifacts": { # Artifacts produced by a build that should be uploaded upon # Artifacts produced by the build that should be uploaded upon
+        # successful completion of all build steps.
+        # successful completion of all build steps.
       "images": [ # A list of images to be pushed upon the successful completion of all build
           # steps.
           #
@@ -1332,28 +2285,298 @@
           # If any of the images fail to be pushed, the build is marked FAILURE.
         "A String",
       ],
-      "createTime": "A String", # Time at which the request to create the build was received.
-          # @OutputOnly
-      "logUrl": "A String", # URL to logs for this build in Google Cloud Logging.
-          # @OutputOnly
+      "objects": { # Files in the workspace to upload to Cloud Storage upon successful # A list of objects to be uploaded to Cloud Storage upon successful
+          # completion of all build steps.
+          #
+          # Files in the workspace matching specified paths globs will be uploaded to
+          # the specified Cloud Storage location using the builder service account's
+          # credentials.
+          #
+          # The location and generation of the uploaded objects will be stored in the
+          # Build resource's results field.
+          #
+          # If any objects fail to be pushed, the build is marked FAILURE.
+          # completion of all build steps.
+        "timing": { # Start and end times for a build execution phase. # Output only. Stores timing information for pushing all artifact objects.
+          "endTime": "A String", # End of time span.
+          "startTime": "A String", # Start of time span.
+        },
+        "paths": [ # Path globs used to match files in the build's workspace.
+          "A String",
+        ],
+        "location": "A String", # Cloud Storage bucket and optional object path, in the form
+            # "gs://bucket/path/to/somewhere/". (see [Bucket Name
+            # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+            #
+            # Files in the workspace matching any path pattern will be uploaded to
+            # Cloud Storage with this location as a prefix.
+      },
     },
-    "triggerTemplate": { # RepoSource describes the location of the source in a Google Cloud Source # Template describing the types of source changes to trigger a build.
-        # 
-        # Branch and tag names in trigger templates are interpreted as regular
-        # expressions. Any branch or tag change that matches that regular expression
-        # will trigger a build.
-        # Repository.
-      "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-          # the build is assumed.
-      "branchName": "A String", # Name of the branch to build.
-      "commitSha": "A String", # Explicit commit SHA to build.
-      "tagName": "A String", # Name of the tag to build.
-      "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
+    "projectId": "A String", # Output only. ID of the project.
+    "substitutions": { # Substitutions data for `Build` resource.
+      "a_key": "A String",
     },
-    "id": "A String", # Unique identifier of the trigger.
-        # 
-        # @OutputOnly
-  }
+    "source": { # Location of the source in a supported storage service. # The location of the source files to build.
+      "repoSource": { # Location of the source in a Google Cloud Source Repository. # If provided, get the source from this location in a Cloud Source
+          # Repository.
+        "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+            # project ID requesting the build is assumed.
+        "commitSha": "A String", # Explicit commit SHA to build.
+        "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+            # assumed.
+        "tagName": "A String", # Name of the tag to build.
+        "branchName": "A String", # Name of the branch to build.
+        "dir": "A String", # Directory, relative to the source root, in which to run the build.
+            #
+            # This must be a relative path. If a step's `dir` is specified and is an
+            # absolute path, this value is ignored for that step's execution.
+      },
+      "storageSource": { # Location of the source in an archive file in Google Cloud Storage. # If provided, get the source from this location in Google Cloud Storage.
+        "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
+            # omitted, the latest generation will be used.
+        "object": "A String", # Google Cloud Storage object containing the source.
+            #
+            # This object must be a gzipped archive file (`.tar.gz`) containing source to
+            # build.
+        "bucket": "A String", # Google Cloud Storage bucket containing the source (see
+            # [Bucket Name
+            # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+      },
+    },
+    "status": "A String", # Output only. Status of the build.
+    "tags": [ # Tags for annotation of a `Build`. These are not docker tags.
+      "A String",
+    ],
+    "statusDetail": "A String", # Output only. Customer-readable message about the current status.
+    "startTime": "A String", # Output only. Time at which execution of the build was started.
+    "timing": { # Output only. Stores timing information for phases of the build. Valid keys
+        # are:
+        #
+        # * BUILD: time to execute all build steps
+        # * PUSH: time to push all specified images.
+        # * FETCHSOURCE: time to fetch source.
+        #
+        # If the build does not specify source or images,
+        # these keys will not be included.
+      "a_key": { # Start and end times for a build execution phase.
+        "endTime": "A String", # End of time span.
+        "startTime": "A String", # Start of time span.
+      },
+    },
+    "createTime": "A String", # Output only. Time at which the request to create the build was received.
+    "finishTime": "A String", # Output only. Time at which execution of the build was finished.
+        #
+        # The difference between finish_time and start_time is the duration of the
+        # build's execution.
+    "buildTriggerId": "A String", # Output only. The ID of the `BuildTrigger` that triggered this build, if it
+        # was triggered automatically.
+    "secrets": [ # Secrets to decrypt using Cloud Key Management Service.
+      { # Pairs a set of secret environment variables containing encrypted
+          # values with the Cloud KMS key to use to decrypt the value.
+        "secretEnv": { # Map of environment variable name to its encrypted value.
+            #
+            # Secret environment variables must be unique across all of a build's
+            # secrets, and must be used by at least one build step. Values can be at most
+            # 64 KB in size. There can be at most 100 secret values across all of a
+            # build's secrets.
+          "a_key": "A String",
+        },
+        "kmsKeyName": "A String", # Cloud KMS key name to use to decrypt these envs.
+      },
+    ],
+    "steps": [ # Required. The operations to be performed on the workspace.
+      { # A step in the build pipeline.
+        "status": "A String", # Output only. Status of the build step. At this time, build step status is
+            # only updated on build completion; step status is not updated in real-time
+            # as the build progresses.
+        "args": [ # A list of arguments that will be presented to the step when it is started.
+            #
+            # If the image used to run the step's container has an entrypoint, the `args`
+            # are used as arguments to that entrypoint. If the image does not define
+            # an entrypoint, the first element in args is used as the entrypoint,
+            # and the remainder will be used as arguments.
+          "A String",
+        ],
+        "env": [ # A list of environment variable definitions to be used when running a step.
+            #
+            # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
+            # being given the value "VALUE".
+          "A String",
+        ],
+        "waitFor": [ # The ID(s) of the step(s) that this build step depends on.
+            # This build step will not start until all the build steps in `wait_for`
+            # have completed successfully. If `wait_for` is empty, this build step will
+            # start when all previous build steps in the `Build.Steps` list have
+            # completed successfully.
+          "A String",
+        ],
+        "timeout": "A String", # Time limit for executing this build step. If not defined, the step has no
+            # time limit and will be allowed to continue to run until either it completes
+            # or the build itself times out.
+        "secretEnv": [ # A list of environment variables which are encrypted using a Cloud Key
+            # Management Service crypto key. These values must be specified in the
+            # build's `Secret`.
+          "A String",
+        ],
+        "entrypoint": "A String", # Entrypoint to be used instead of the build step image's default entrypoint.
+            # If unset, the image's default entrypoint is used.
+        "volumes": [ # List of volumes to mount into the build step.
+            #
+            # Each volume is created as an empty volume prior to execution of the
+            # build step. Upon completion of the build, volumes and their contents are
+            # discarded.
+            #
+            # Using a named volume in only one step is not valid as it is indicative
+            # of a build request with an incorrect configuration.
+          { # Volume describes a Docker container volume which is mounted into build steps
+              # in order to persist files across build step execution.
+            "path": "A String", # Path at which to mount the volume.
+                #
+                # Paths must be absolute and cannot conflict with other volume paths on the
+                # same build step or with certain reserved volume paths.
+            "name": "A String", # Name of the volume to mount.
+                #
+                # Volume names must be unique per build step and must be valid names for
+                # Docker volumes. Each named volume must be used by at least two build steps.
+          },
+        ],
+        "timing": { # Start and end times for a build execution phase. # Output only. Stores timing information for executing this build step.
+          "endTime": "A String", # End of time span.
+          "startTime": "A String", # Start of time span.
+        },
+        "pullTiming": { # Start and end times for a build execution phase. # Output only. Stores timing information for pulling this build step's
+            # builder image only.
+          "endTime": "A String", # End of time span.
+          "startTime": "A String", # Start of time span.
+        },
+        "id": "A String", # Unique identifier for this build step, used in `wait_for` to
+            # reference this build step as a dependency.
+        "dir": "A String", # Working directory to use when running this step's container.
+            #
+            # If this value is a relative path, it is relative to the build's working
+            # directory. If this value is absolute, it may be outside the build's working
+            # directory, in which case the contents of the path may not be persisted
+            # across build step executions, unless a `volume` for that path is specified.
+            #
+            # If the build specifies a `RepoSource` with `dir` and a step with a `dir`,
+            # which specifies an absolute path, the `RepoSource` `dir` is ignored for
+            # the step's execution.
+        "name": "A String", # Required. The name of the container image that will run this particular
+            # build step.
+            #
+            # If the image is available in the host's Docker daemon's cache, it
+            # will be run directly. If not, the host will attempt to pull the image
+            # first, using the builder service account's credentials if necessary.
+            #
+            # The Docker daemon's cache will already have the latest versions of all of
+            # the officially supported build steps
+            # ([https://github.com/GoogleCloudPlatform/cloud-builders](https://github.com/GoogleCloudPlatform/cloud-builders)).
+            # The Docker daemon will also have cached many of the layers for some popular
+            # images, like "ubuntu", "debian", but they will be refreshed at the time you
+            # attempt to use them.
+            #
+            # If you built an image in a previous build step, it will be stored in the
+            # host's Docker daemon's cache and is available to use as the name for a
+            # later build step.
+      },
+    ],
+    "timeout": "A String", # Amount of time that this build should be allowed to run, to second
+        # granularity. If this amount of time elapses, work on the build will cease
+        # and the build status will be `TIMEOUT`.
+        #
+        # Default time is ten minutes.
+    "logsBucket": "A String", # Google Cloud Storage bucket where logs should be written (see
+        # [Bucket Name
+        # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+        # Logs file names will be of the format `${logs_bucket}/log-${build_id}.txt`.
+    "options": { # Optional arguments to enable specific features of builds. # Special options for this build.
+      "substitutionOption": "A String", # Option to specify behavior when there is an error in the substitution
+          # checks.
+      "logging": "A String", # Option to specify the logging mode, which determines where the logs are
+          # stored.
+      "volumes": [ # Global list of volumes to mount for ALL build steps
+          #
+          # Each volume is created as an empty volume prior to starting the build
+          # process. Upon completion of the build, volumes and their contents are
+          # discarded. Global volume names and paths cannot conflict with the volumes
+          # defined a build step.
+          #
+          # Using a global volume in a build with only one step is not valid as
+          # it is indicative of a build request with an incorrect configuration.
+        { # Volume describes a Docker container volume which is mounted into build steps
+            # in order to persist files across build step execution.
+          "path": "A String", # Path at which to mount the volume.
+              #
+              # Paths must be absolute and cannot conflict with other volume paths on the
+              # same build step or with certain reserved volume paths.
+          "name": "A String", # Name of the volume to mount.
+              #
+              # Volume names must be unique per build step and must be valid names for
+              # Docker volumes. Each named volume must be used by at least two build steps.
+        },
+      ],
+      "workerPool": "A String", # Option to specify a `WorkerPool` for the build. User specifies the pool
+          # with the format "[WORKERPOOL_PROJECT_ID]/[WORKERPOOL_NAME]".
+          # This is an experimental field.
+      "logStreamingOption": "A String", # Option to define build log streaming behavior to Google Cloud
+          # Storage.
+      "sourceProvenanceHash": [ # Requested hash for SourceProvenance.
+        "A String",
+      ],
+      "secretEnv": [ # A list of global environment variables, which are encrypted using a Cloud
+          # Key Management Service crypto key. These values must be specified in the
+          # build's `Secret`. These variables will be available to all build steps
+          # in this build.
+        "A String",
+      ],
+      "diskSizeGb": "A String", # Requested disk size for the VM that runs the build. Note that this is *NOT*
+          # "disk free"; some of the space will be used by the operating system and
+          # build utilities. Also note that this is the minimum disk size that will be
+          # allocated for the build -- the build may run with a larger disk than
+          # requested. At present, the maximum disk size is 1000GB; builds that request
+          # more than the maximum are rejected with an error.
+      "env": [ # A list of global environment variable definitions that will exist for all
+          # build steps in this build. If a variable is defined in both globally and in
+          # a build step, the variable will use the build step value.
+          #
+          # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
+          # being given the value "VALUE".
+        "A String",
+      ],
+      "requestedVerifyOption": "A String", # Requested verifiability options.
+      "machineType": "A String", # Compute Engine machine type on which to run the build.
+    },
+    "logUrl": "A String", # Output only. URL to logs for this build in Google Cloud Console.
+  },
+  "includedFiles": [ # If any of the files altered in the commit pass the ignored_files
+      # filter and included_files is empty, then as far as this filter is
+      # concerned, we should trigger the build.
+      # 
+      # If any of the files altered in the commit pass the ignored_files
+      # filter and included_files is not empty, then we make sure that at
+      # least one of those files matches a included_files glob. If not,
+      # then we do not trigger a build.
+    "A String",
+  ],
+  "triggerTemplate": { # Location of the source in a Google Cloud Source Repository. # Template describing the types of source changes to trigger a build.
+      # 
+      # Branch and tag names in trigger templates are interpreted as regular
+      # expressions. Any branch or tag change that matches that regular expression
+      # will trigger a build.
+    "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+        # project ID requesting the build is assumed.
+    "commitSha": "A String", # Explicit commit SHA to build.
+    "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+        # assumed.
+    "tagName": "A String", # Name of the tag to build.
+    "branchName": "A String", # Name of the branch to build.
+    "dir": "A String", # Directory, relative to the source root, in which to run the build.
+        #
+        # This must be a relative path. If a step's `dir` is specified and is an
+        # absolute path, this value is ignored for that step's execution.
+  },
+  "id": "A String", # Output only. Unique identifier of the trigger.
+}
 
   x__xgafv: string, V1 error format.
     Allowed values
@@ -1364,204 +2587,174 @@
   An object of the form:
 
     { # Configuration for an automated build in response to source repository
-        # changes.
-      "description": "A String", # Human-readable description of this trigger.
-      "filename": "A String", # Path, from the source root, to a file whose contents is used for the
-          # template.
-      "createTime": "A String", # Time when the trigger was created.
-          #
-          # @OutputOnly
-      "substitutions": { # Substitutions data for Build resource.
-        "a_key": "A String",
-      },
-      "disabled": True or False, # If true, the trigger will never result in a build.
-      "build": { # A build resource in the Container Builder API. # Contents of the build template.
-          #
-          # At a high level, a Build describes where to find source code, how to build
-          # it (for example, the builder image to run on the source), and what tag to
-          # apply to the built image when it is pushed to Google Container Registry.
-          #
-          # Fields can include the following variables which will be expanded when the
-          # build is created:
-          #
-          # - $PROJECT_ID: the project ID of the build.
-          # - $BUILD_ID: the autogenerated ID of the build.
-          # - $REPO_NAME: the source repository name specified by RepoSource.
-          # - $BRANCH_NAME: the branch name specified by RepoSource.
-          # - $TAG_NAME: the tag name specified by RepoSource.
-          # - $REVISION_ID or $COMMIT_SHA: the commit SHA specified by RepoSource or
-          #   resolved from the specified branch or tag.
-        "finishTime": "A String", # Time at which execution of the build was finished.
+      # changes.
+    "github": { # GitHubEventsConfig describes the configuration of a trigger that creates a # GitHubEventsConfig describes the configuration of a trigger that creates
+        # a build whenever a GitHub event is received.
+        # build whenever a GitHub event is received.
+        #
+        # This message is experimental.
+      "name": "A String", # Name of the repository.
+      "pullRequest": { # PullRequestFilter contains filter properties for matching GitHub Pull # filter to match changes in pull requests.
+          # Requests.
+        "commentControl": "A String", # Whether to block builds on a "/gcbrun" comment from a repository owner or
+            # collaborator.
+        "branch": "A String", # Regex of branches to match.
             #
-            # The difference between finish_time and start_time is the duration of the
-            # build's execution.
-            # @OutputOnly
-        "status": "A String", # Status of the build.
-            # @OutputOnly
-        "startTime": "A String", # Time at which execution of the build was started.
-            # @OutputOnly
-        "statusDetail": "A String", # Customer-readable message about the current status.
-            # @OutputOnly
-        "tags": [ # Tags for annotation of a Build. These are not docker tags.
+            # The syntax of the regular expressions accepted is the syntax accepted by
+            # RE2 and described at https://github.com/google/re2/wiki/Syntax
+      },
+      "owner": "A String", # Owner of the repository.
+      "push": { # Push contains filter properties for matching GitHub git pushes. # filter to match changes in refs like branches, tags.
+        "tag": "A String", # Regexes of tags to match.
+            #
+            # The syntax of the regular expressions accepted is the syntax accepted by
+            # RE2 and described at https://github.com/google/re2/wiki/Syntax
+        "branch": "A String", # Regexes of branches to match.
+            #
+            # The syntax of the regular expressions accepted is the syntax accepted by
+            # RE2 and described at https://github.com/google/re2/wiki/Syntax
+      },
+      "installationId": "A String", # The installationID that emmits the GitHub event.
+      "checkSuite": { # A CheckSuiteFilter is a filter that indicates that we should build on all # Output only. Indicates that a build was generated from a check suite
+          # event.
+          # check suite events.
+      },
+    },
+    "description": "A String", # Human-readable description of this trigger.
+    "tags": [ # Tags for annotation of a `BuildTrigger`
+      "A String",
+    ],
+    "ignoredFiles": [ # ignored_files and included_files are file glob matches using
+        # http://godoc/pkg/path/filepath#Match extended with support for "**".
+        #
+        # If ignored_files and changed files are both empty, then they are
+        # not used to determine whether or not to trigger a build.
+        #
+        # If ignored_files is not empty, then we ignore any files that match
+        # any of the ignored_file globs. If the change has no files that are
+        # outside of the ignored_files globs, then we do not trigger a build.
+      "A String",
+    ],
+    "filename": "A String", # Path, from the source root, to a file whose contents is used for the
+        # template.
+    "createTime": "A String", # Output only. Time when the trigger was created.
+    "substitutions": { # Substitutions data for Build resource.
+      "a_key": "A String",
+    },
+    "disabled": True or False, # If true, the trigger will never result in a build.
+    "build": { # A build resource in the Cloud Build API. # Contents of the build template.
+        #
+        # At a high level, a `Build` describes where to find source code, how to build
+        # it (for example, the builder image to run on the source), and where to store
+        # the built artifacts.
+        #
+        # Fields can include the following variables, which will be expanded when the
+        # build is created:
+        #
+        # - $PROJECT_ID: the project ID of the build.
+        # - $BUILD_ID: the autogenerated ID of the build.
+        # - $REPO_NAME: the source repository name specified by RepoSource.
+        # - $BRANCH_NAME: the branch name specified by RepoSource.
+        # - $TAG_NAME: the tag name specified by RepoSource.
+        # - $REVISION_ID or $COMMIT_SHA: the commit SHA specified by RepoSource or
+        #   resolved from the specified branch or tag.
+        # - $SHORT_SHA: first 7 characters of $REVISION_ID or $COMMIT_SHA.
+      "results": { # Artifacts created by the build pipeline. # Output only. Results of the build.
+        "buildStepOutputs": [ # List of build step outputs, produced by builder images, in the order
+            # corresponding to build step indices.
+            #
+            # [Cloud Builders](https://cloud.google.com/cloud-build/docs/cloud-builders)
+            # can produce this output by writing to `$BUILDER_OUTPUT/output`.
+            # Only the first 4KB of data is stored.
           "A String",
         ],
-        "projectId": "A String", # ID of the project.
-            # @OutputOnly.
-        "id": "A String", # Unique identifier of the build.
-            # @OutputOnly
-        "results": { # Results describes the artifacts created by the build pipeline. # Results of the build.
-            # @OutputOnly
-          "images": [ # Images that were built as a part of the build.
-            { # BuiltImage describes an image built by the pipeline.
-              "name": "A String", # Name used to push the container image to Google Container Registry, as
-                  # presented to `docker push`.
-              "digest": "A String", # Docker Registry 2.0 digest.
+        "artifactTiming": { # Start and end times for a build execution phase. # Time to push all non-container artifacts.
+          "endTime": "A String", # End of time span.
+          "startTime": "A String", # Start of time span.
+        },
+        "artifactManifest": "A String", # Path to the artifact manifest. Only populated when artifacts are uploaded.
+        "images": [ # Container images that were built as a part of the build.
+          { # An image built by the pipeline.
+            "pushTiming": { # Start and end times for a build execution phase. # Output only. Stores timing information for pushing the specified image.
+              "endTime": "A String", # End of time span.
+              "startTime": "A String", # Start of time span.
             },
-          ],
-          "buildStepImages": [ # List of build step digests, in order corresponding to build step indices.
-            "A String",
-          ],
-        },
-        "timeout": "A String", # Amount of time that this build should be allowed to run, to second
-            # granularity. If this amount of time elapses, work on the build will cease
-            # and the build status will be TIMEOUT.
-            #
-            # Default time is ten minutes.
-        "substitutions": { # Substitutions data for Build resource.
-          "a_key": "A String",
-        },
-        "source": { # Source describes the location of the source in a supported storage # Describes where to find the source files to build.
-            # service.
-          "repoSource": { # RepoSource describes the location of the source in a Google Cloud Source # If provided, get source from this location in a Cloud Repo.
-              # Repository.
-            "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-                # the build is assumed.
-            "branchName": "A String", # Name of the branch to build.
-            "commitSha": "A String", # Explicit commit SHA to build.
-            "tagName": "A String", # Name of the tag to build.
-            "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
-          },
-          "storageSource": { # StorageSource describes the location of the source in an archive file in # If provided, get the source from this location in in Google Cloud
-              # Storage.
-              # Google Cloud Storage.
-            "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
-                # omitted, the latest generation will be used.
-            "object": "A String", # Google Cloud Storage object containing source.
-                #
-                # This object must be a gzipped archive file (.tar.gz) containing source to
-                # build.
-            "bucket": "A String", # Google Cloud Storage bucket containing source (see
-                # [Bucket Name
-                # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
-          },
-        },
-        "buildTriggerId": "A String", # The ID of the BuildTrigger that triggered this build, if it was
-            # triggered automatically.
-            # @OutputOnly
-        "options": { # Optional arguments to enable specific features of builds. # Special options for this build.
-          "requestedVerifyOption": "A String", # Requested verifiability options.
-          "sourceProvenanceHash": [ # Requested hash for SourceProvenance.
-            "A String",
-          ],
-        },
-        "steps": [ # Describes the operations to be performed on the workspace.
-          { # BuildStep describes a step to perform in the build pipeline.
-            "waitFor": [ # The ID(s) of the step(s) that this build step depends on.
-                # This build step will not start until all the build steps in wait_for
-                # have completed successfully. If wait_for is empty, this build step will
-                # start when all previous build steps in the Build.Steps list have completed
-                # successfully.
-              "A String",
-            ],
-            "name": "A String", # The name of the container image that will run this particular build step.
-                #
-                # If the image is already available in the host's Docker daemon's cache, it
-                # will be run directly. If not, the host will attempt to pull the image
-                # first, using the builder service account's credentials if necessary.
-                #
-                # The Docker daemon's cache will already have the latest versions of all of
-                # the officially supported build steps
-                # ([https://github.com/GoogleCloudPlatform/cloud-builders](https://github.com/GoogleCloudPlatform/cloud-builders)).
-                # The Docker daemon will also have cached many of the layers for some popular
-                # images, like "ubuntu", "debian", but they will be refreshed at the time you
-                # attempt to use them.
-                #
-                # If you built an image in a previous build step, it will be stored in the
-                # host's Docker daemon's cache and is available to use as the name for a
-                # later build step.
-            "args": [ # A list of arguments that will be presented to the step when it is started.
-                #
-                # If the image used to run the step's container has an entrypoint, these args
-                # will be used as arguments to that entrypoint. If the image does not define
-                # an entrypoint, the first element in args will be used as the entrypoint,
-                # and the remainder will be used as arguments.
-              "A String",
-            ],
-            "entrypoint": "A String", # Optional entrypoint to be used instead of the build step image's default
-                # If unset, the image's default will be used.
-            "env": [ # A list of environment variable definitions to be used when running a step.
-                #
-                # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
-                # being given the value "VALUE".
-              "A String",
-            ],
-            "id": "A String", # Optional unique identifier for this build step, used in wait_for to
-                # reference this build step as a dependency.
-            "dir": "A String", # Working directory (relative to project source root) to use when running
-                # this operation's container.
+            "name": "A String", # Name used to push the container image to Google Container Registry, as
+                # presented to `docker push`.
+            "digest": "A String", # Docker Registry 2.0 digest.
           },
         ],
-        "sourceProvenance": { # Provenance of the source. Ways to find the original source, or verify that # A permanent fixed identifier for source.
-            # @OutputOnly
-            # some source was used for this build.
-          "resolvedRepoSource": { # RepoSource describes the location of the source in a Google Cloud Source # A copy of the build's source.repo_source, if exists, with any
-              # revisions resolved.
-              # Repository.
-            "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-                # the build is assumed.
-            "branchName": "A String", # Name of the branch to build.
-            "commitSha": "A String", # Explicit commit SHA to build.
-            "tagName": "A String", # Name of the tag to build.
-            "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
-          },
-          "fileHashes": { # Hash(es) of the build source, which can be used to verify that the original
-              # source integrity was maintained in the build. Note that FileHashes will
-              # only be populated if BuildOptions has requested a SourceProvenanceHash.
+        "buildStepImages": [ # List of build step digests, in the order corresponding to build step
+            # indices.
+          "A String",
+        ],
+        "numArtifacts": "A String", # Number of artifacts uploaded. Only populated when artifacts are uploaded.
+      },
+      "sourceProvenance": { # Provenance of the source. Ways to find the original source, or verify that # Output only. A permanent fixed identifier for source.
+          # some source was used for this build.
+        "resolvedRepoSource": { # Location of the source in a Google Cloud Source Repository. # A copy of the build's `source.repo_source`, if exists, with any
+            # revisions resolved.
+          "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+              # project ID requesting the build is assumed.
+          "commitSha": "A String", # Explicit commit SHA to build.
+          "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+              # assumed.
+          "tagName": "A String", # Name of the tag to build.
+          "branchName": "A String", # Name of the branch to build.
+          "dir": "A String", # Directory, relative to the source root, in which to run the build.
               #
-              # The keys to this map are file paths used as build source and the values
-              # contain the hash values for those files.
-              #
-              # If the build source came in a single package such as a gzipped tarfile
-              # (.tar.gz), the FileHash will be for the single path to that file.
-              # @OutputOnly
-            "a_key": { # Container message for hashes of byte content of files, used in
-                # SourceProvenance messages to verify integrity of source input to the build.
-              "fileHash": [ # Collection of file hashes.
-                { # Container message for hash values.
-                  "type": "A String", # The type of hash that was performed.
-                  "value": "A String", # The hash value.
-                },
-              ],
-            },
-          },
-          "resolvedStorageSource": { # StorageSource describes the location of the source in an archive file in # A copy of the build's source.storage_source, if exists, with any
-              # generations resolved.
-              # Google Cloud Storage.
-            "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
-                # omitted, the latest generation will be used.
-            "object": "A String", # Google Cloud Storage object containing source.
-                #
-                # This object must be a gzipped archive file (.tar.gz) containing source to
-                # build.
-            "bucket": "A String", # Google Cloud Storage bucket containing source (see
-                # [Bucket Name
-                # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+              # This must be a relative path. If a step's `dir` is specified and is an
+              # absolute path, this value is ignored for that step's execution.
+        },
+        "fileHashes": { # Output only. Hash(es) of the build source, which can be used to verify that
+            # the original source integrity was maintained in the build. Note that
+            # `FileHashes` will only be populated if `BuildOptions` has requested a
+            # `SourceProvenanceHash`.
+            #
+            # The keys to this map are file paths used as build source and the values
+            # contain the hash values for those files.
+            #
+            # If the build source came in a single package such as a gzipped tarfile
+            # (`.tar.gz`), the `FileHash` will be for the single path to that file.
+          "a_key": { # Container message for hashes of byte content of files, used in
+              # SourceProvenance messages to verify integrity of source input to the build.
+            "fileHash": [ # Collection of file hashes.
+              { # Container message for hash values.
+                "type": "A String", # The type of hash that was performed.
+                "value": "A String", # The hash value.
+              },
+            ],
           },
         },
-        "logsBucket": "A String", # Google Cloud Storage bucket where logs should be written (see
-            # [Bucket Name
-            # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
-            # Logs file names will be of the format `${logs_bucket}/log-${build_id}.txt`.
+        "resolvedStorageSource": { # Location of the source in an archive file in Google Cloud Storage. # A copy of the build's `source.storage_source`, if exists, with any
+            # generations resolved.
+          "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
+              # omitted, the latest generation will be used.
+          "object": "A String", # Google Cloud Storage object containing the source.
+              #
+              # This object must be a gzipped archive file (`.tar.gz`) containing source to
+              # build.
+          "bucket": "A String", # Google Cloud Storage bucket containing the source (see
+              # [Bucket Name
+              # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+        },
+      },
+      "images": [ # A list of images to be pushed upon the successful completion of all build
+          # steps.
+          #
+          # The images are pushed using the builder service account's credentials.
+          #
+          # The digests of the pushed images will be stored in the `Build` resource's
+          # results field.
+          #
+          # If any of the images fail to be pushed, the build status is marked
+          # `FAILURE`.
+        "A String",
+      ],
+      "id": "A String", # Output only. Unique identifier of the build.
+      "artifacts": { # Artifacts produced by a build that should be uploaded upon # Artifacts produced by the build that should be uploaded upon
+          # successful completion of all build steps.
+          # successful completion of all build steps.
         "images": [ # A list of images to be pushed upon the successful completion of all build
             # steps.
             #
@@ -1573,28 +2766,375 @@
             # If any of the images fail to be pushed, the build is marked FAILURE.
           "A String",
         ],
-        "createTime": "A String", # Time at which the request to create the build was received.
-            # @OutputOnly
-        "logUrl": "A String", # URL to logs for this build in Google Cloud Logging.
-            # @OutputOnly
+        "objects": { # Files in the workspace to upload to Cloud Storage upon successful # A list of objects to be uploaded to Cloud Storage upon successful
+            # completion of all build steps.
+            #
+            # Files in the workspace matching specified paths globs will be uploaded to
+            # the specified Cloud Storage location using the builder service account's
+            # credentials.
+            #
+            # The location and generation of the uploaded objects will be stored in the
+            # Build resource's results field.
+            #
+            # If any objects fail to be pushed, the build is marked FAILURE.
+            # completion of all build steps.
+          "timing": { # Start and end times for a build execution phase. # Output only. Stores timing information for pushing all artifact objects.
+            "endTime": "A String", # End of time span.
+            "startTime": "A String", # Start of time span.
+          },
+          "paths": [ # Path globs used to match files in the build's workspace.
+            "A String",
+          ],
+          "location": "A String", # Cloud Storage bucket and optional object path, in the form
+              # "gs://bucket/path/to/somewhere/". (see [Bucket Name
+              # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+              #
+              # Files in the workspace matching any path pattern will be uploaded to
+              # Cloud Storage with this location as a prefix.
+        },
       },
-      "triggerTemplate": { # RepoSource describes the location of the source in a Google Cloud Source # Template describing the types of source changes to trigger a build.
-          #
-          # Branch and tag names in trigger templates are interpreted as regular
-          # expressions. Any branch or tag change that matches that regular expression
-          # will trigger a build.
-          # Repository.
-        "projectId": "A String", # ID of the project that owns the repo. If omitted, the project ID requesting
-            # the build is assumed.
-        "branchName": "A String", # Name of the branch to build.
-        "commitSha": "A String", # Explicit commit SHA to build.
-        "tagName": "A String", # Name of the tag to build.
-        "repoName": "A String", # Name of the repo. If omitted, the name "default" is assumed.
+      "projectId": "A String", # Output only. ID of the project.
+      "substitutions": { # Substitutions data for `Build` resource.
+        "a_key": "A String",
       },
-      "id": "A String", # Unique identifier of the trigger.
+      "source": { # Location of the source in a supported storage service. # The location of the source files to build.
+        "repoSource": { # Location of the source in a Google Cloud Source Repository. # If provided, get the source from this location in a Cloud Source
+            # Repository.
+          "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+              # project ID requesting the build is assumed.
+          "commitSha": "A String", # Explicit commit SHA to build.
+          "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+              # assumed.
+          "tagName": "A String", # Name of the tag to build.
+          "branchName": "A String", # Name of the branch to build.
+          "dir": "A String", # Directory, relative to the source root, in which to run the build.
+              #
+              # This must be a relative path. If a step's `dir` is specified and is an
+              # absolute path, this value is ignored for that step's execution.
+        },
+        "storageSource": { # Location of the source in an archive file in Google Cloud Storage. # If provided, get the source from this location in Google Cloud Storage.
+          "generation": "A String", # Google Cloud Storage generation for the object. If the generation is
+              # omitted, the latest generation will be used.
+          "object": "A String", # Google Cloud Storage object containing the source.
+              #
+              # This object must be a gzipped archive file (`.tar.gz`) containing source to
+              # build.
+          "bucket": "A String", # Google Cloud Storage bucket containing the source (see
+              # [Bucket Name
+              # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+        },
+      },
+      "status": "A String", # Output only. Status of the build.
+      "tags": [ # Tags for annotation of a `Build`. These are not docker tags.
+        "A String",
+      ],
+      "statusDetail": "A String", # Output only. Customer-readable message about the current status.
+      "startTime": "A String", # Output only. Time at which execution of the build was started.
+      "timing": { # Output only. Stores timing information for phases of the build. Valid keys
+          # are:
           #
-          # @OutputOnly
-    }</pre>
+          # * BUILD: time to execute all build steps
+          # * PUSH: time to push all specified images.
+          # * FETCHSOURCE: time to fetch source.
+          #
+          # If the build does not specify source or images,
+          # these keys will not be included.
+        "a_key": { # Start and end times for a build execution phase.
+          "endTime": "A String", # End of time span.
+          "startTime": "A String", # Start of time span.
+        },
+      },
+      "createTime": "A String", # Output only. Time at which the request to create the build was received.
+      "finishTime": "A String", # Output only. Time at which execution of the build was finished.
+          #
+          # The difference between finish_time and start_time is the duration of the
+          # build's execution.
+      "buildTriggerId": "A String", # Output only. The ID of the `BuildTrigger` that triggered this build, if it
+          # was triggered automatically.
+      "secrets": [ # Secrets to decrypt using Cloud Key Management Service.
+        { # Pairs a set of secret environment variables containing encrypted
+            # values with the Cloud KMS key to use to decrypt the value.
+          "secretEnv": { # Map of environment variable name to its encrypted value.
+              #
+              # Secret environment variables must be unique across all of a build's
+              # secrets, and must be used by at least one build step. Values can be at most
+              # 64 KB in size. There can be at most 100 secret values across all of a
+              # build's secrets.
+            "a_key": "A String",
+          },
+          "kmsKeyName": "A String", # Cloud KMS key name to use to decrypt these envs.
+        },
+      ],
+      "steps": [ # Required. The operations to be performed on the workspace.
+        { # A step in the build pipeline.
+          "status": "A String", # Output only. Status of the build step. At this time, build step status is
+              # only updated on build completion; step status is not updated in real-time
+              # as the build progresses.
+          "args": [ # A list of arguments that will be presented to the step when it is started.
+              #
+              # If the image used to run the step's container has an entrypoint, the `args`
+              # are used as arguments to that entrypoint. If the image does not define
+              # an entrypoint, the first element in args is used as the entrypoint,
+              # and the remainder will be used as arguments.
+            "A String",
+          ],
+          "env": [ # A list of environment variable definitions to be used when running a step.
+              #
+              # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
+              # being given the value "VALUE".
+            "A String",
+          ],
+          "waitFor": [ # The ID(s) of the step(s) that this build step depends on.
+              # This build step will not start until all the build steps in `wait_for`
+              # have completed successfully. If `wait_for` is empty, this build step will
+              # start when all previous build steps in the `Build.Steps` list have
+              # completed successfully.
+            "A String",
+          ],
+          "timeout": "A String", # Time limit for executing this build step. If not defined, the step has no
+              # time limit and will be allowed to continue to run until either it completes
+              # or the build itself times out.
+          "secretEnv": [ # A list of environment variables which are encrypted using a Cloud Key
+              # Management Service crypto key. These values must be specified in the
+              # build's `Secret`.
+            "A String",
+          ],
+          "entrypoint": "A String", # Entrypoint to be used instead of the build step image's default entrypoint.
+              # If unset, the image's default entrypoint is used.
+          "volumes": [ # List of volumes to mount into the build step.
+              #
+              # Each volume is created as an empty volume prior to execution of the
+              # build step. Upon completion of the build, volumes and their contents are
+              # discarded.
+              #
+              # Using a named volume in only one step is not valid as it is indicative
+              # of a build request with an incorrect configuration.
+            { # Volume describes a Docker container volume which is mounted into build steps
+                # in order to persist files across build step execution.
+              "path": "A String", # Path at which to mount the volume.
+                  #
+                  # Paths must be absolute and cannot conflict with other volume paths on the
+                  # same build step or with certain reserved volume paths.
+              "name": "A String", # Name of the volume to mount.
+                  #
+                  # Volume names must be unique per build step and must be valid names for
+                  # Docker volumes. Each named volume must be used by at least two build steps.
+            },
+          ],
+          "timing": { # Start and end times for a build execution phase. # Output only. Stores timing information for executing this build step.
+            "endTime": "A String", # End of time span.
+            "startTime": "A String", # Start of time span.
+          },
+          "pullTiming": { # Start and end times for a build execution phase. # Output only. Stores timing information for pulling this build step's
+              # builder image only.
+            "endTime": "A String", # End of time span.
+            "startTime": "A String", # Start of time span.
+          },
+          "id": "A String", # Unique identifier for this build step, used in `wait_for` to
+              # reference this build step as a dependency.
+          "dir": "A String", # Working directory to use when running this step's container.
+              #
+              # If this value is a relative path, it is relative to the build's working
+              # directory. If this value is absolute, it may be outside the build's working
+              # directory, in which case the contents of the path may not be persisted
+              # across build step executions, unless a `volume` for that path is specified.
+              #
+              # If the build specifies a `RepoSource` with `dir` and a step with a `dir`,
+              # which specifies an absolute path, the `RepoSource` `dir` is ignored for
+              # the step's execution.
+          "name": "A String", # Required. The name of the container image that will run this particular
+              # build step.
+              #
+              # If the image is available in the host's Docker daemon's cache, it
+              # will be run directly. If not, the host will attempt to pull the image
+              # first, using the builder service account's credentials if necessary.
+              #
+              # The Docker daemon's cache will already have the latest versions of all of
+              # the officially supported build steps
+              # ([https://github.com/GoogleCloudPlatform/cloud-builders](https://github.com/GoogleCloudPlatform/cloud-builders)).
+              # The Docker daemon will also have cached many of the layers for some popular
+              # images, like "ubuntu", "debian", but they will be refreshed at the time you
+              # attempt to use them.
+              #
+              # If you built an image in a previous build step, it will be stored in the
+              # host's Docker daemon's cache and is available to use as the name for a
+              # later build step.
+        },
+      ],
+      "timeout": "A String", # Amount of time that this build should be allowed to run, to second
+          # granularity. If this amount of time elapses, work on the build will cease
+          # and the build status will be `TIMEOUT`.
+          #
+          # Default time is ten minutes.
+      "logsBucket": "A String", # Google Cloud Storage bucket where logs should be written (see
+          # [Bucket Name
+          # Requirements](https://cloud.google.com/storage/docs/bucket-naming#requirements)).
+          # Logs file names will be of the format `${logs_bucket}/log-${build_id}.txt`.
+      "options": { # Optional arguments to enable specific features of builds. # Special options for this build.
+        "substitutionOption": "A String", # Option to specify behavior when there is an error in the substitution
+            # checks.
+        "logging": "A String", # Option to specify the logging mode, which determines where the logs are
+            # stored.
+        "volumes": [ # Global list of volumes to mount for ALL build steps
+            #
+            # Each volume is created as an empty volume prior to starting the build
+            # process. Upon completion of the build, volumes and their contents are
+            # discarded. Global volume names and paths cannot conflict with the volumes
+            # defined a build step.
+            #
+            # Using a global volume in a build with only one step is not valid as
+            # it is indicative of a build request with an incorrect configuration.
+          { # Volume describes a Docker container volume which is mounted into build steps
+              # in order to persist files across build step execution.
+            "path": "A String", # Path at which to mount the volume.
+                #
+                # Paths must be absolute and cannot conflict with other volume paths on the
+                # same build step or with certain reserved volume paths.
+            "name": "A String", # Name of the volume to mount.
+                #
+                # Volume names must be unique per build step and must be valid names for
+                # Docker volumes. Each named volume must be used by at least two build steps.
+          },
+        ],
+        "workerPool": "A String", # Option to specify a `WorkerPool` for the build. User specifies the pool
+            # with the format "[WORKERPOOL_PROJECT_ID]/[WORKERPOOL_NAME]".
+            # This is an experimental field.
+        "logStreamingOption": "A String", # Option to define build log streaming behavior to Google Cloud
+            # Storage.
+        "sourceProvenanceHash": [ # Requested hash for SourceProvenance.
+          "A String",
+        ],
+        "secretEnv": [ # A list of global environment variables, which are encrypted using a Cloud
+            # Key Management Service crypto key. These values must be specified in the
+            # build's `Secret`. These variables will be available to all build steps
+            # in this build.
+          "A String",
+        ],
+        "diskSizeGb": "A String", # Requested disk size for the VM that runs the build. Note that this is *NOT*
+            # "disk free"; some of the space will be used by the operating system and
+            # build utilities. Also note that this is the minimum disk size that will be
+            # allocated for the build -- the build may run with a larger disk than
+            # requested. At present, the maximum disk size is 1000GB; builds that request
+            # more than the maximum are rejected with an error.
+        "env": [ # A list of global environment variable definitions that will exist for all
+            # build steps in this build. If a variable is defined in both globally and in
+            # a build step, the variable will use the build step value.
+            #
+            # The elements are of the form "KEY=VALUE" for the environment variable "KEY"
+            # being given the value "VALUE".
+          "A String",
+        ],
+        "requestedVerifyOption": "A String", # Requested verifiability options.
+        "machineType": "A String", # Compute Engine machine type on which to run the build.
+      },
+      "logUrl": "A String", # Output only. URL to logs for this build in Google Cloud Console.
+    },
+    "includedFiles": [ # If any of the files altered in the commit pass the ignored_files
+        # filter and included_files is empty, then as far as this filter is
+        # concerned, we should trigger the build.
+        #
+        # If any of the files altered in the commit pass the ignored_files
+        # filter and included_files is not empty, then we make sure that at
+        # least one of those files matches a included_files glob. If not,
+        # then we do not trigger a build.
+      "A String",
+    ],
+    "triggerTemplate": { # Location of the source in a Google Cloud Source Repository. # Template describing the types of source changes to trigger a build.
+        #
+        # Branch and tag names in trigger templates are interpreted as regular
+        # expressions. Any branch or tag change that matches that regular expression
+        # will trigger a build.
+      "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+          # project ID requesting the build is assumed.
+      "commitSha": "A String", # Explicit commit SHA to build.
+      "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+          # assumed.
+      "tagName": "A String", # Name of the tag to build.
+      "branchName": "A String", # Name of the branch to build.
+      "dir": "A String", # Directory, relative to the source root, in which to run the build.
+          #
+          # This must be a relative path. If a step's `dir` is specified and is an
+          # absolute path, this value is ignored for that step's execution.
+    },
+    "id": "A String", # Output only. Unique identifier of the trigger.
+  }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="run">run(projectId, triggerId, body, x__xgafv=None)</code>
+  <pre>Runs a `BuildTrigger` at a particular source revision.
+
+Args:
+  projectId: string, ID of the project. (required)
+  triggerId: string, ID of the trigger. (required)
+  body: object, The request body. (required)
+    The object takes the form of:
+
+{ # Location of the source in a Google Cloud Source Repository.
+  "projectId": "A String", # ID of the project that owns the Cloud Source Repository. If omitted, the
+      # project ID requesting the build is assumed.
+  "commitSha": "A String", # Explicit commit SHA to build.
+  "repoName": "A String", # Name of the Cloud Source Repository. If omitted, the name "default" is
+      # assumed.
+  "tagName": "A String", # Name of the tag to build.
+  "branchName": "A String", # Name of the branch to build.
+  "dir": "A String", # Directory, relative to the source root, in which to run the build.
+      # 
+      # This must be a relative path. If a step's `dir` is specified and is an
+      # absolute path, this value is ignored for that step's execution.
+}
+
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # This resource represents a long-running operation that is the result of a
+      # network API call.
+    "metadata": { # Service-specific metadata associated with the operation.  It typically
+        # contains progress information and common metadata such as create time.
+        # Some services might not provide such metadata.  Any method that returns a
+        # long-running operation should document the metadata type, if any.
+      "a_key": "", # Properties of the object. Contains field @type with type URL.
+    },
+    "error": { # The `Status` type defines a logical error model that is suitable for # The error result of the operation in case of failure or cancellation.
+        # different programming environments, including REST APIs and RPC APIs. It is
+        # used by [gRPC](https://github.com/grpc). Each `Status` message contains
+        # three pieces of data: error code, error message, and error details.
+        #
+        # You can find out more about this error model and how to work with it in the
+        # [API Design Guide](https://cloud.google.com/apis/design/errors).
+      "message": "A String", # A developer-facing error message, which should be in English. Any
+          # user-facing error message should be localized and sent in the
+          # google.rpc.Status.details field, or localized by the client.
+      "code": 42, # The status code, which should be an enum value of google.rpc.Code.
+      "details": [ # A list of messages that carry the error details.  There is a common set of
+          # message types for APIs to use.
+        {
+          "a_key": "", # Properties of the object. Contains field @type with type URL.
+        },
+      ],
+    },
+    "done": True or False, # If the value is `false`, it means the operation is still in progress.
+        # If `true`, the operation is completed, and either `error` or `response` is
+        # available.
+    "response": { # The normal response of the operation in case of success.  If the original
+        # method returns no data on success, such as `Delete`, the response is
+        # `google.protobuf.Empty`.  If the original method is standard
+        # `Get`/`Create`/`Update`, the response should be the resource.  For other
+        # methods, the response should have the type `XxxResponse`, where `Xxx`
+        # is the original method name.  For example, if the original method name
+        # is `TakeSnapshot()`, the inferred response type is
+        # `TakeSnapshotResponse`.
+      "a_key": "", # Properties of the object. Contains field @type with type URL.
+    },
+    "name": "A String", # The server-assigned name, which is only unique within the same service that
+        # originally returns it. If you use the default HTTP mapping, the
+        # `name` should be a resource name ending with `operations/{unique_id}`.
+  }</pre>
 </div>
 
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