Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
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+
+<h1><a href="cloudasset_v1beta1.html">Cloud Asset API</a> . <a href="cloudasset_v1beta1.projects.html">projects</a></h1>
+<h2>Instance Methods</h2>
+<p class="toc_element">
+  <code><a href="cloudasset_v1beta1.projects.operations.html">operations()</a></code>
+</p>
+<p class="firstline">Returns the operations Resource.</p>
+
+<p class="toc_element">
+  <code><a href="#batchGetAssetsHistory">batchGetAssetsHistory(parent, contentType=None, assetNames=None, readTimeWindow_startTime=None, readTimeWindow_endTime=None, x__xgafv=None)</a></code></p>
+<p class="firstline">Batch gets the update history of assets that overlap a time window.</p>
+<p class="toc_element">
+  <code><a href="#exportAssets">exportAssets(parent, body, x__xgafv=None)</a></code></p>
+<p class="firstline">Exports assets with time and resource types to a given Cloud Storage</p>
+<h3>Method Details</h3>
+<div class="method">
+    <code class="details" id="batchGetAssetsHistory">batchGetAssetsHistory(parent, contentType=None, assetNames=None, readTimeWindow_startTime=None, readTimeWindow_endTime=None, x__xgafv=None)</code>
+  <pre>Batch gets the update history of assets that overlap a time window.
+For RESOURCE content, this API outputs history with asset in both
+non-delete or deleted status.
+For IAM_POLICY content, this API outputs history when the asset and its
+attached IAM POLICY both exist. This can create gaps in the output history.
+If a specified asset does not exist, this API returns an INVALID_ARGUMENT
+error.
+
+Args:
+  parent: string, Required. The relative name of the root asset. It can only be an
+organization number (such as "organizations/123"), a project ID (such as
+"projects/my-project-id")", or a project number (such as "projects/12345"). (required)
+  contentType: string, Required. The content type.
+  assetNames: string, A list of the full names of the assets. For example:
+`//compute.googleapis.com/projects/my_project_123/zones/zone1/instances/instance1`.
+See [Resource
+Names](https://cloud.google.com/apis/design/resource_names#full_resource_name)
+for more info.
+
+The request becomes a no-op if the asset name list is empty, and the max
+size of the asset name list is 100 in one request. (repeated)
+  readTimeWindow_startTime: string, Start time of the time window (exclusive).
+  readTimeWindow_endTime: string, End time of the time window (inclusive).
+Current timestamp if not specified.
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # Batch get assets history response.
+    "assets": [ # A list of assets with valid time windows.
+      { # Temporal asset. In addition to the asset, the temporal asset includes the
+          # status of the asset and valid from and to time of it.
+        "deleted": True or False, # If the asset is deleted or not.
+        "window": { # A time window of (start_time, end_time]. # The time window when the asset data and state was observed.
+          "endTime": "A String", # End time of the time window (inclusive).
+              # Current timestamp if not specified.
+          "startTime": "A String", # Start time of the time window (exclusive).
+        },
+        "asset": { # Cloud asset. This includes all Google Cloud Platform resources, # Asset.
+            # Cloud IAM policies, and other non-GCP assets.
+          "iamPolicy": { # Defines an Identity and Access Management (IAM) policy. It is used to # Representation of the actual Cloud IAM policy set on a cloud resource. For
+              # each resource, there must be at most one Cloud IAM policy set on it.
+              # specify access control policies for Cloud Platform resources.
+              #
+              #
+              # A `Policy` consists of a list of `bindings`. A `binding` binds a list of
+              # `members` to a `role`, where the members can be user accounts, Google groups,
+              # Google domains, and service accounts. A `role` is a named list of permissions
+              # defined by IAM.
+              #
+              # **JSON Example**
+              #
+              #     {
+              #       "bindings": [
+              #         {
+              #           "role": "roles/owner",
+              #           "members": [
+              #             "user:mike@example.com",
+              #             "group:admins@example.com",
+              #             "domain:google.com",
+              #             "serviceAccount:my-other-app@appspot.gserviceaccount.com"
+              #           ]
+              #         },
+              #         {
+              #           "role": "roles/viewer",
+              #           "members": ["user:sean@example.com"]
+              #         }
+              #       ]
+              #     }
+              #
+              # **YAML Example**
+              #
+              #     bindings:
+              #     - members:
+              #       - user:mike@example.com
+              #       - group:admins@example.com
+              #       - domain:google.com
+              #       - serviceAccount:my-other-app@appspot.gserviceaccount.com
+              #       role: roles/owner
+              #     - members:
+              #       - user:sean@example.com
+              #       role: roles/viewer
+              #
+              #
+              # For a description of IAM and its features, see the
+              # [IAM developer's guide](https://cloud.google.com/iam/docs).
+            "auditConfigs": [ # Specifies cloud audit logging configuration for this policy.
+              { # Specifies the audit configuration for a service.
+                  # The configuration determines which permission types are logged, and what
+                  # identities, if any, are exempted from logging.
+                  # An AuditConfig must have one or more AuditLogConfigs.
+                  #
+                  # If there are AuditConfigs for both `allServices` and a specific service,
+                  # the union of the two AuditConfigs is used for that service: the log_types
+                  # specified in each AuditConfig are enabled, and the exempted_members in each
+                  # AuditLogConfig are exempted.
+                  #
+                  # Example Policy with multiple AuditConfigs:
+                  #
+                  #     {
+                  #       "audit_configs": [
+                  #         {
+                  #           "service": "allServices"
+                  #           "audit_log_configs": [
+                  #             {
+                  #               "log_type": "DATA_READ",
+                  #               "exempted_members": [
+                  #                 "user:foo@gmail.com"
+                  #               ]
+                  #             },
+                  #             {
+                  #               "log_type": "DATA_WRITE",
+                  #             },
+                  #             {
+                  #               "log_type": "ADMIN_READ",
+                  #             }
+                  #           ]
+                  #         },
+                  #         {
+                  #           "service": "fooservice.googleapis.com"
+                  #           "audit_log_configs": [
+                  #             {
+                  #               "log_type": "DATA_READ",
+                  #             },
+                  #             {
+                  #               "log_type": "DATA_WRITE",
+                  #               "exempted_members": [
+                  #                 "user:bar@gmail.com"
+                  #               ]
+                  #             }
+                  #           ]
+                  #         }
+                  #       ]
+                  #     }
+                  #
+                  # For fooservice, this policy enables DATA_READ, DATA_WRITE and ADMIN_READ
+                  # logging. It also exempts foo@gmail.com from DATA_READ logging, and
+                  # bar@gmail.com from DATA_WRITE logging.
+                "auditLogConfigs": [ # The configuration for logging of each type of permission.
+                  { # Provides the configuration for logging a type of permissions.
+                      # Example:
+                      #
+                      #     {
+                      #       "audit_log_configs": [
+                      #         {
+                      #           "log_type": "DATA_READ",
+                      #           "exempted_members": [
+                      #             "user:foo@gmail.com"
+                      #           ]
+                      #         },
+                      #         {
+                      #           "log_type": "DATA_WRITE",
+                      #         }
+                      #       ]
+                      #     }
+                      #
+                      # This enables 'DATA_READ' and 'DATA_WRITE' logging, while exempting
+                      # foo@gmail.com from DATA_READ logging.
+                    "exemptedMembers": [ # Specifies the identities that do not cause logging for this type of
+                        # permission.
+                        # Follows the same format of Binding.members.
+                      "A String",
+                    ],
+                    "logType": "A String", # The log type that this config enables.
+                  },
+                ],
+                "service": "A String", # Specifies a service that will be enabled for audit logging.
+                    # For example, `storage.googleapis.com`, `cloudsql.googleapis.com`.
+                    # `allServices` is a special value that covers all services.
+              },
+            ],
+            "etag": "A String", # `etag` is used for optimistic concurrency control as a way to help
+                # prevent simultaneous updates of a policy from overwriting each other.
+                # It is strongly suggested that systems make use of the `etag` in the
+                # read-modify-write cycle to perform policy updates in order to avoid race
+                # conditions: An `etag` is returned in the response to `getIamPolicy`, and
+                # systems are expected to put that etag in the request to `setIamPolicy` to
+                # ensure that their change will be applied to the same version of the policy.
+                #
+                # If no `etag` is provided in the call to `setIamPolicy`, then the existing
+                # policy is overwritten blindly.
+            "bindings": [ # Associates a list of `members` to a `role`.
+                # `bindings` with no members will result in an error.
+              { # Associates `members` with a `role`.
+                "role": "A String", # Role that is assigned to `members`.
+                    # For example, `roles/viewer`, `roles/editor`, or `roles/owner`.
+                "members": [ # Specifies the identities requesting access for a Cloud Platform resource.
+                    # `members` can have the following values:
+                    #
+                    # * `allUsers`: A special identifier that represents anyone who is
+                    #    on the internet; with or without a Google account.
+                    #
+                    # * `allAuthenticatedUsers`: A special identifier that represents anyone
+                    #    who is authenticated with a Google account or a service account.
+                    #
+                    # * `user:{emailid}`: An email address that represents a specific Google
+                    #    account. For example, `alice@gmail.com` .
+                    #
+                    #
+                    # * `serviceAccount:{emailid}`: An email address that represents a service
+                    #    account. For example, `my-other-app@appspot.gserviceaccount.com`.
+                    #
+                    # * `group:{emailid}`: An email address that represents a Google group.
+                    #    For example, `admins@example.com`.
+                    #
+                    #
+                    # * `domain:{domain}`: The G Suite domain (primary) that represents all the
+                    #    users of that domain. For example, `google.com` or `example.com`.
+                    #
+                  "A String",
+                ],
+                "condition": { # Represents an expression text. Example: # The condition that is associated with this binding.
+                    # NOTE: An unsatisfied condition will not allow user access via current
+                    # binding. Different bindings, including their conditions, are examined
+                    # independently.
+                    #
+                    #     title: "User account presence"
+                    #     description: "Determines whether the request has a user account"
+                    #     expression: "size(request.user) > 0"
+                  "description": "A String", # An optional description of the expression. This is a longer text which
+                      # describes the expression, e.g. when hovered over it in a UI.
+                  "expression": "A String", # Textual representation of an expression in
+                      # Common Expression Language syntax.
+                      #
+                      # The application context of the containing message determines which
+                      # well-known feature set of CEL is supported.
+                  "location": "A String", # An optional string indicating the location of the expression for error
+                      # reporting, e.g. a file name and a position in the file.
+                  "title": "A String", # An optional title for the expression, i.e. a short string describing
+                      # its purpose. This can be used e.g. in UIs which allow to enter the
+                      # expression.
+                },
+              },
+            ],
+            "version": 42, # Deprecated.
+          },
+          "assetType": "A String", # Type of the asset. Example: "google.compute.Disk".
+          "resource": { # Representation of a cloud resource. # Representation of the resource.
+            "resourceUrl": "A String", # The REST URL for accessing the resource. An HTTP GET operation using this
+                # URL returns the resource itself.
+                # Example:
+                # `https://cloudresourcemanager.googleapis.com/v1/projects/my-project-123`.
+                # It will be left unspecified for resources without a REST API.
+            "parent": "A String", # The full name of the immediate parent of this resource. See
+                # [Resource
+                # Names](https://cloud.google.com/apis/design/resource_names#full_resource_name)
+                # for more information.
+                #
+                # For GCP assets, it is the parent resource defined in the [Cloud IAM policy
+                # hierarchy](https://cloud.google.com/iam/docs/overview#policy_hierarchy).
+                # For example:
+                # `"//cloudresourcemanager.googleapis.com/projects/my_project_123"`.
+                #
+                # For third-party assets, it is up to the users to define.
+            "discoveryDocumentUri": "A String", # The URL of the discovery document containing the resource's JSON schema.
+                # For example:
+                # `"https://www.googleapis.com/discovery/v1/apis/compute/v1/rest"`.
+                # It will be left unspecified for resources without a discovery-based API,
+                # such as Cloud Bigtable.
+            "discoveryName": "A String", # The JSON schema name listed in the discovery document.
+                # Example: "Project". It will be left unspecified for resources (such as
+                # Cloud Bigtable) without a discovery-based API.
+            "version": "A String", # The API version. Example: "v1".
+            "data": { # The content of the resource, in which some sensitive fields are scrubbed
+                # away and may not be present.
+              "a_key": "", # Properties of the object.
+            },
+          },
+          "name": "A String", # The full name of the asset. For example:
+              # `//compute.googleapis.com/projects/my_project_123/zones/zone1/instances/instance1`.
+              # See [Resource
+              # Names](https://cloud.google.com/apis/design/resource_names#full_resource_name)
+              # for more information.
+        },
+      },
+    ],
+  }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="exportAssets">exportAssets(parent, body, x__xgafv=None)</code>
+  <pre>Exports assets with time and resource types to a given Cloud Storage
+location. The output format is newline-delimited JSON.
+This API implements the google.longrunning.Operation API allowing you
+to keep track of the export.
+
+Args:
+  parent: string, Required. The relative name of the root asset. This can only be an
+organization number (such as "organizations/123"), a project ID (such as
+"projects/my-project-id"), a project number (such as "projects/12345"), or
+a folder number (such as "folders/123"). (required)
+  body: object, The request body. (required)
+    The object takes the form of:
+
+{ # Export asset request.
+    "assetTypes": [ # A list of asset types of which to take a snapshot for. For example:
+        # "google.compute.Disk". If specified, only matching assets will be returned.
+        # See [Introduction to Cloud Asset
+        # Inventory](https://cloud.google.com/resource-manager/docs/cloud-asset-inventory/overview)
+        # for all supported asset types.
+      "A String",
+    ],
+    "outputConfig": { # Output configuration for export assets destination. # Required. Output configuration indicating where the results will be output
+        # to. All results will be in newline delimited JSON format.
+      "gcsDestination": { # A Cloud Storage location. # Destination on Cloud Storage.
+        "uriPrefix": "A String", # The uri prefix of all generated Cloud Storage objects. For example:
+            # "gs://bucket_name/object_name_prefix". Each object uri is in format:
+            # "gs://bucket_name/object_name_prefix/<asset type>/<shard number> and only
+            # contains assets for that type. <shard number> starts from 0. For example:
+            # "gs://bucket_name/object_name_prefix/google.compute.disk/0" is the first
+            # shard of output objects containing all google.compute.disk assets.
+            # An INVALID_ARGUMENT error will be returned if file with the same name
+            # "gs://bucket_name/object_name_prefix" already exists.
+        "uri": "A String", # The uri of the Cloud Storage object. It's the same uri that is used by
+            # gsutil. For example: "gs://bucket_name/object_name". See [Viewing and
+            # Editing Object
+            # Metadata](https://cloud.google.com/storage/docs/viewing-editing-metadata)
+            # for more information.
+      },
+    },
+    "contentType": "A String", # Asset content type. If not specified, no content but the asset name will be
+        # returned.
+    "readTime": "A String", # Timestamp to take an asset snapshot. This can only be set to a timestamp
+        # between 2018-10-02 UTC (inclusive) and the current time. If not specified,
+        # the current time will be used. Due to delays in resource data collection
+        # and indexing, there is a volatile window during which running the same
+        # query may get different results.
+  }
+
+  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). The error model is designed to be:
+        #
+        # - Simple to use and understand for most users
+        # - Flexible enough to meet unexpected needs
+        #
+        # # Overview
+        #
+        # The `Status` message contains three pieces of data: error code, error
+        # message, and error details. The error code should be an enum value of
+        # google.rpc.Code, but it may accept additional error codes if needed.  The
+        # error message should be a developer-facing English message that helps
+        # developers *understand* and *resolve* the error. If a localized user-facing
+        # error message is needed, put the localized message in the error details or
+        # localize it in the client. The optional error details may contain arbitrary
+        # information about the error. There is a predefined set of error detail types
+        # in the package `google.rpc` that can be used for common error conditions.
+        #
+        # # Language mapping
+        #
+        # The `Status` message is the logical representation of the error model, but it
+        # is not necessarily the actual wire format. When the `Status` message is
+        # exposed in different client libraries and different wire protocols, it can be
+        # mapped differently. For example, it will likely be mapped to some exceptions
+        # in Java, but more likely mapped to some error codes in C.
+        #
+        # # Other uses
+        #
+        # The error model and the `Status` message can be used in a variety of
+        # environments, either with or without APIs, to provide a
+        # consistent developer experience across different environments.
+        #
+        # Example uses of this error model include:
+        #
+        # - Partial errors. If a service needs to return partial errors to the client,
+        #     it may embed the `Status` in the normal response to indicate the partial
+        #     errors.
+        #
+        # - Workflow errors. A typical workflow has multiple steps. Each step may
+        #     have a `Status` message for error reporting.
+        #
+        # - Batch operations. If a client uses batch request and batch response, the
+        #     `Status` message should be used directly inside batch response, one for
+        #     each error sub-response.
+        #
+        # - Asynchronous operations. If an API call embeds asynchronous operation
+        #     results in its response, the status of those operations should be
+        #     represented directly using the `Status` message.
+        #
+        # - Logging. If some API errors are stored in logs, the message `Status` could
+        #     be used directly after any stripping needed for security/privacy reasons.
+      "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 have the format of `operations/some/unique/name`.
+  }</pre>
+</div>
+
+</body></html>
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