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+<h1><a href="serviceuser_v1.html">Google Service User API</a> . <a href="serviceuser_v1.projects.html">projects</a> . <a href="serviceuser_v1.projects.services.html">services</a></h1>
+<h2>Instance Methods</h2>
+<p class="toc_element">
+  <code><a href="#disable">disable(name=None, body, x__xgafv=None)</a></code></p>
+<p class="firstline">Disable a service so it can no longer be used with a</p>
+<p class="toc_element">
+  <code><a href="#enable">enable(name=None, body, x__xgafv=None)</a></code></p>
+<p class="firstline">Enable a service so it can be used with a project.</p>
+<p class="toc_element">
+  <code><a href="#list">list(parent=None, pageSize=None, pageToken=None, x__xgafv=None)</a></code></p>
+<p class="firstline">List enabled services for the specified consumer.</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>
+<h3>Method Details</h3>
+<div class="method">
+    <code class="details" id="disable">disable(name=None, body, x__xgafv=None)</code>
+  <pre>Disable a service so it can no longer be used with a
+project. This prevents unintended usage that may cause unexpected billing
+charges or security leaks.
+
+Operation<response: google.protobuf.Empty>
+
+Args:
+  name: string, Name of the consumer and the service to disable for that consumer.
+
+The Service User implementation accepts the following forms for consumer:
+- "project:<project_id>"
+
+A valid path would be:
+- /v1/projects/my-project/services/servicemanagement.googleapis.com:disable (required)
+  body: object, The request body. (required)
+    The object takes the form of:
+
+{ # Request message for DisableService method.
+  }
+
+  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 different # The error result of the operation in case of failure or cancellation.
+        # 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` which 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 purpose.
+        #
+        # - 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 will be 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>
+
+<div class="method">
+    <code class="details" id="enable">enable(name=None, body, x__xgafv=None)</code>
+  <pre>Enable a service so it can be used with a project.
+See [Cloud Auth Guide](https://cloud.google.com/docs/authentication) for
+more information.
+
+Operation<response: google.protobuf.Empty>
+
+Args:
+  name: string, Name of the consumer and the service to enable for that consumer.
+
+A valid path would be:
+- /v1/projects/my-project/services/servicemanagement.googleapis.com:enable (required)
+  body: object, The request body. (required)
+    The object takes the form of:
+
+{ # Request message for EnableService method.
+  }
+
+  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 different # The error result of the operation in case of failure or cancellation.
+        # 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` which 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 purpose.
+        #
+        # - 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 will be 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>
+
+<div class="method">
+    <code class="details" id="list">list(parent=None, pageSize=None, pageToken=None, x__xgafv=None)</code>
+  <pre>List enabled services for the specified consumer.
+
+Args:
+  parent: string, List enabled services for the specified parent.
+
+An example valid parent would be:
+- projects/my-project (required)
+  pageSize: integer, Requested size of the next page of data.
+  pageToken: string, Token identifying which result to start with; returned by a previous list
+call.
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # Response message for `ListEnabledServices` method.
+    "services": [ # Services enabled for the specified parent.
+      { # The published version of a Service that is managed by
+          # Google Service Management.
+        "name": "A String", # The resource name of the service.
+            #
+            # A valid name would be:
+            # - services/serviceuser.googleapis.com
+        "service": { # `Service` is the root object of Google service configuration schema. It # The service's published configuration.
+            # describes basic information about a service, such as the name and the
+            # title, and delegates other aspects to sub-sections. Each sub-section is
+            # either a proto message or a repeated proto message that configures a
+            # specific aspect, such as auth. See each proto message definition for details.
+            #
+            # Example:
+            #
+            #     type: google.api.Service
+            #     config_version: 3
+            #     name: calendar.googleapis.com
+            #     title: Google Calendar API
+            #     apis:
+            #     - name: google.calendar.v3.Calendar
+            #     authentication:
+            #       providers:
+            #       - id: google_calendar_auth
+            #         jwks_uri: https://www.googleapis.com/oauth2/v1/certs
+            #         issuer: https://securetoken.google.com
+            #       rules:
+            #       - selector: "*"
+            #         requirements:
+            #           provider_id: google_calendar_auth
+          "control": { # Selects and configures the service controller used by the service.  The # Configuration for the service control plane.
+              # service controller handles features like abuse, quota, billing, logging,
+              # monitoring, etc.
+            "environment": "A String", # The service control environment to use. If empty, no control plane
+                # feature (like quota and billing) will be enabled.
+          },
+          "monitoredResources": [ # Defines the monitored resources used by this service. This is required
+              # by the Service.monitoring and Service.logging configurations.
+            { # An object that describes the schema of a MonitoredResource object using a
+                # type name and a set of labels.  For example, the monitored resource
+                # descriptor for Google Compute Engine VM instances has a type of
+                # `"gce_instance"` and specifies the use of the labels `"instance_id"` and
+                # `"zone"` to identify particular VM instances.
+                #
+                # Different APIs can support different monitored resource types. APIs generally
+                # provide a `list` method that returns the monitored resource descriptors used
+                # by the API.
+              "type": "A String", # Required. The monitored resource type. For example, the type
+                  # `"cloudsql_database"` represents databases in Google Cloud SQL.
+                  # The maximum length of this value is 256 characters.
+              "labels": [ # Required. A set of labels used to describe instances of this monitored
+                  # resource type. For example, an individual Google Cloud SQL database is
+                  # identified by values for the labels `"database_id"` and `"zone"`.
+                { # A description of a label.
+                  "valueType": "A String", # The type of data that can be assigned to the label.
+                  "description": "A String", # A human-readable description for the label.
+                  "key": "A String", # The label key.
+                },
+              ],
+              "displayName": "A String", # Optional. A concise name for the monitored resource type that might be
+                  # displayed in user interfaces. It should be a Title Cased Noun Phrase,
+                  # without any article or other determiners. For example,
+                  # `"Google Cloud SQL Database"`.
+              "name": "A String", # Optional. The resource name of the monitored resource descriptor:
+                  # `"projects/{project_id}/monitoredResourceDescriptors/{type}"` where
+                  # {type} is the value of the `type` field in this object and
+                  # {project_id} is a project ID that provides API-specific context for
+                  # accessing the type.  APIs that do not use project information can use the
+                  # resource name format `"monitoredResourceDescriptors/{type}"`.
+              "description": "A String", # Optional. A detailed description of the monitored resource type that might
+                  # be used in documentation.
+            },
+          ],
+          "logs": [ # Defines the logs used by this service.
+            { # A description of a log type. Example in YAML format:
+                #
+                #     - name: library.googleapis.com/activity_history
+                #       description: The history of borrowing and returning library items.
+                #       display_name: Activity
+                #       labels:
+                #       - key: /customer_id
+                #         description: Identifier of a library customer
+              "labels": [ # The set of labels that are available to describe a specific log entry.
+                  # Runtime requests that contain labels not specified here are
+                  # considered invalid.
+                { # A description of a label.
+                  "valueType": "A String", # The type of data that can be assigned to the label.
+                  "description": "A String", # A human-readable description for the label.
+                  "key": "A String", # The label key.
+                },
+              ],
+              "displayName": "A String", # The human-readable name for this log. This information appears on
+                  # the user interface and should be concise.
+              "name": "A String", # The name of the log. It must be less than 512 characters long and can
+                  # include the following characters: upper- and lower-case alphanumeric
+                  # characters [A-Za-z0-9], and punctuation characters including
+                  # slash, underscore, hyphen, period [/_-.].
+              "description": "A String", # A human-readable description of this log. This information appears in
+                  # the documentation and can contain details.
+            },
+          ],
+          "id": "A String", # A unique ID for a specific instance of this message, typically assigned
+              # by the client for tracking purpose. If empty, the server may choose to
+              # generate one instead.
+          "backend": { # `Backend` defines the backend configuration for a service. # API backend configuration.
+            "rules": [ # A list of API backend rules that apply to individual API methods.
+                #
+                # **NOTE:** All service configuration rules follow "last one wins" order.
+              { # A backend rule provides configuration for an individual API element.
+                "selector": "A String", # Selects the methods to which this rule applies.
+                    #
+                    # Refer to selector for syntax details.
+                "deadline": 3.14, # The number of seconds to wait for a response from a request.  The
+                    # default depends on the deployment context.
+                "address": "A String", # The address of the API backend.
+              },
+            ],
+          },
+          "monitoring": { # Monitoring configuration of the service. # Monitoring configuration.
+              #
+              # The example below shows how to configure monitored resources and metrics
+              # for monitoring. In the example, a monitored resource and two metrics are
+              # defined. The `library.googleapis.com/book/returned_count` metric is sent
+              # to both producer and consumer projects, whereas the
+              # `library.googleapis.com/book/overdue_count` metric is only sent to the
+              # consumer project.
+              #
+              #     monitored_resources:
+              #     - type: library.googleapis.com/branch
+              #       labels:
+              #       - key: /city
+              #         description: The city where the library branch is located in.
+              #       - key: /name
+              #         description: The name of the branch.
+              #     metrics:
+              #     - name: library.googleapis.com/book/returned_count
+              #       metric_kind: DELTA
+              #       value_type: INT64
+              #       labels:
+              #       - key: /customer_id
+              #     - name: library.googleapis.com/book/overdue_count
+              #       metric_kind: GAUGE
+              #       value_type: INT64
+              #       labels:
+              #       - key: /customer_id
+              #     monitoring:
+              #       producer_destinations:
+              #       - monitored_resource: library.googleapis.com/branch
+              #         metrics:
+              #         - library.googleapis.com/book/returned_count
+              #       consumer_destinations:
+              #       - monitored_resource: library.googleapis.com/branch
+              #         metrics:
+              #         - library.googleapis.com/book/returned_count
+              #         - library.googleapis.com/book/overdue_count
+            "producerDestinations": [ # Monitoring configurations for sending metrics to the producer project.
+                # There can be multiple producer destinations, each one must have a
+                # different monitored resource type. A metric can be used in at most
+                # one producer destination.
+              { # Configuration of a specific monitoring destination (the producer project
+                  # or the consumer project).
+                "monitoredResource": "A String", # The monitored resource type. The type must be defined in
+                    # Service.monitored_resources section.
+                "metrics": [ # Names of the metrics to report to this monitoring destination.
+                    # Each name must be defined in Service.metrics section.
+                  "A String",
+                ],
+              },
+            ],
+            "consumerDestinations": [ # Monitoring configurations for sending metrics to the consumer project.
+                # There can be multiple consumer destinations, each one must have a
+                # different monitored resource type. A metric can be used in at most
+                # one consumer destination.
+              { # Configuration of a specific monitoring destination (the producer project
+                  # or the consumer project).
+                "monitoredResource": "A String", # The monitored resource type. The type must be defined in
+                    # Service.monitored_resources section.
+                "metrics": [ # Names of the metrics to report to this monitoring destination.
+                    # Each name must be defined in Service.metrics section.
+                  "A String",
+                ],
+              },
+            ],
+          },
+          "systemParameters": { # ### System parameter configuration # System parameter configuration.
+              #
+              # A system parameter is a special kind of parameter defined by the API
+              # system, not by an individual API. It is typically mapped to an HTTP header
+              # and/or a URL query parameter. This configuration specifies which methods
+              # change the names of the system parameters.
+            "rules": [ # Define system parameters.
+                #
+                # The parameters defined here will override the default parameters
+                # implemented by the system. If this field is missing from the service
+                # config, default system parameters will be used. Default system parameters
+                # and names is implementation-dependent.
+                #
+                # Example: define api key for all methods
+                #
+                #     system_parameters
+                #       rules:
+                #         - selector: "*"
+                #           parameters:
+                #             - name: api_key
+                #               url_query_parameter: api_key
+                #
+                #
+                # Example: define 2 api key names for a specific method.
+                #
+                #     system_parameters
+                #       rules:
+                #         - selector: "/ListShelves"
+                #           parameters:
+                #             - name: api_key
+                #               http_header: Api-Key1
+                #             - name: api_key
+                #               http_header: Api-Key2
+                #
+                # **NOTE:** All service configuration rules follow "last one wins" order.
+              { # Define a system parameter rule mapping system parameter definitions to
+                  # methods.
+                "parameters": [ # Define parameters. Multiple names may be defined for a parameter.
+                    # For a given method call, only one of them should be used. If multiple
+                    # names are used the behavior is implementation-dependent.
+                    # If none of the specified names are present the behavior is
+                    # parameter-dependent.
+                  { # Define a parameter's name and location. The parameter may be passed as either
+                      # an HTTP header or a URL query parameter, and if both are passed the behavior
+                      # is implementation-dependent.
+                    "urlQueryParameter": "A String", # Define the URL query parameter name to use for the parameter. It is case
+                        # sensitive.
+                    "name": "A String", # Define the name of the parameter, such as "api_key" . It is case sensitive.
+                    "httpHeader": "A String", # Define the HTTP header name to use for the parameter. It is case
+                        # insensitive.
+                  },
+                ],
+                "selector": "A String", # Selects the methods to which this rule applies. Use '*' to indicate all
+                    # methods in all APIs.
+                    #
+                    # Refer to selector for syntax details.
+              },
+            ],
+          },
+          "authentication": { # `Authentication` defines the authentication configuration for an API. # Auth configuration.
+              #
+              # Example for an API targeted for external use:
+              #
+              #     name: calendar.googleapis.com
+              #     authentication:
+              #       providers:
+              #       - id: google_calendar_auth
+              #         jwks_uri: https://www.googleapis.com/oauth2/v1/certs
+              #         issuer: https://securetoken.google.com
+              #       rules:
+              #       - selector: "*"
+              #         requirements:
+              #           provider_id: google_calendar_auth
+            "rules": [ # A list of authentication rules that apply to individual API methods.
+                #
+                # **NOTE:** All service configuration rules follow "last one wins" order.
+              { # Authentication rules for the service.
+                  #
+                  # By default, if a method has any authentication requirements, every request
+                  # must include a valid credential matching one of the requirements.
+                  # It's an error to include more than one kind of credential in a single
+                  # request.
+                  #
+                  # If a method doesn't have any auth requirements, request credentials will be
+                  # ignored.
+                "oauth": { # OAuth scopes are a way to define data and permissions on data. For example, # The requirements for OAuth credentials.
+                    # there are scopes defined for "Read-only access to Google Calendar" and
+                    # "Access to Cloud Platform". Users can consent to a scope for an application,
+                    # giving it permission to access that data on their behalf.
+                    #
+                    # OAuth scope specifications should be fairly coarse grained; a user will need
+                    # to see and understand the text description of what your scope means.
+                    #
+                    # In most cases: use one or at most two OAuth scopes for an entire family of
+                    # products. If your product has multiple APIs, you should probably be sharing
+                    # the OAuth scope across all of those APIs.
+                    #
+                    # When you need finer grained OAuth consent screens: talk with your product
+                    # management about how developers will use them in practice.
+                    #
+                    # Please note that even though each of the canonical scopes is enough for a
+                    # request to be accepted and passed to the backend, a request can still fail
+                    # due to the backend requiring additional scopes or permissions.
+                  "canonicalScopes": "A String", # The list of publicly documented OAuth scopes that are allowed access. An
+                      # OAuth token containing any of these scopes will be accepted.
+                      #
+                      # Example:
+                      #
+                      #      canonical_scopes: https://www.googleapis.com/auth/calendar,
+                      #                        https://www.googleapis.com/auth/calendar.read
+                },
+                "requirements": [ # Requirements for additional authentication providers.
+                  { # User-defined authentication requirements, including support for
+                      # [JSON Web Token (JWT)](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32).
+                    "providerId": "A String", # id from authentication provider.
+                        #
+                        # Example:
+                        #
+                        #     provider_id: bookstore_auth
+                    "audiences": "A String", # NOTE: This will be deprecated soon, once AuthProvider.audiences is
+                        # implemented and accepted in all the runtime components.
+                        #
+                        # The list of JWT
+                        # [audiences](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.3).
+                        # that are allowed to access. A JWT containing any of these audiences will
+                        # be accepted. When this setting is absent, only JWTs with audience
+                        # "https://Service_name/API_name"
+                        # will be accepted. For example, if no audiences are in the setting,
+                        # LibraryService API will only accept JWTs with the following audience
+                        # "https://library-example.googleapis.com/google.example.library.v1.LibraryService".
+                        #
+                        # Example:
+                        #
+                        #     audiences: bookstore_android.apps.googleusercontent.com,
+                        #                bookstore_web.apps.googleusercontent.com
+                  },
+                ],
+                "allowWithoutCredential": True or False, # Whether to allow requests without a credential. The credential can be
+                    # an OAuth token, Google cookies (first-party auth) or EndUserCreds.
+                    #
+                    # For requests without credentials, if the service control environment is
+                    # specified, each incoming request **must** be associated with a service
+                    # consumer. This can be done by passing an API key that belongs to a consumer
+                    # project.
+                "selector": "A String", # Selects the methods to which this rule applies.
+                    #
+                    # Refer to selector for syntax details.
+              },
+            ],
+            "providers": [ # Defines a set of authentication providers that a service supports.
+              { # Configuration for an anthentication provider, including support for
+                  # [JSON Web Token (JWT)](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32).
+                "audiences": "A String", # The list of JWT
+                    # [audiences](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.3).
+                    # that are allowed to access. A JWT containing any of these audiences will
+                    # be accepted. When this setting is absent, only JWTs with audience
+                    # "https://Service_name/API_name"
+                    # will be accepted. For example, if no audiences are in the setting,
+                    # LibraryService API will only accept JWTs with the following audience
+                    # "https://library-example.googleapis.com/google.example.library.v1.LibraryService".
+                    #
+                    # Example:
+                    #
+                    #     audiences: bookstore_android.apps.googleusercontent.com,
+                    #                bookstore_web.apps.googleusercontent.com
+                "jwksUri": "A String", # URL of the provider's public key set to validate signature of the JWT. See
+                    # [OpenID Discovery](https://openid.net/specs/openid-connect-discovery-1_0.html#ProviderMetadata).
+                    # Optional if the key set document:
+                    #  - can be retrieved from
+                    #    [OpenID Discovery](https://openid.net/specs/openid-connect-discovery-1_0.html
+                    #    of the issuer.
+                    #  - can be inferred from the email domain of the issuer (e.g. a Google service account).
+                    #
+                    # Example: https://www.googleapis.com/oauth2/v1/certs
+                "id": "A String", # The unique identifier of the auth provider. It will be referred to by
+                    # `AuthRequirement.provider_id`.
+                    #
+                    # Example: "bookstore_auth".
+                "issuer": "A String", # Identifies the principal that issued the JWT. See
+                    # https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.1
+                    # Usually a URL or an email address.
+                    #
+                    # Example: https://securetoken.google.com
+                    # Example: 1234567-compute@developer.gserviceaccount.com
+              },
+            ],
+          },
+          "usage": { # Configuration controlling usage of a service. # Configuration controlling usage of this service.
+            "rules": [ # A list of usage rules that apply to individual API methods.
+                #
+                # **NOTE:** All service configuration rules follow "last one wins" order.
+              { # Usage configuration rules for the service.
+                  #
+                  # NOTE: Under development.
+                  #
+                  #
+                  # Use this rule to configure unregistered calls for the service. Unregistered
+                  # calls are calls that do not contain consumer project identity.
+                  # (Example: calls that do not contain an API key).
+                  # By default, API methods do not allow unregistered calls, and each method call
+                  # must be identified by a consumer project identity. Use this rule to
+                  # allow/disallow unregistered calls.
+                  #
+                  # Example of an API that wants to allow unregistered calls for entire service.
+                  #
+                  #     usage:
+                  #       rules:
+                  #       - selector: "*"
+                  #         allow_unregistered_calls: true
+                  #
+                  # Example of a method that wants to allow unregistered calls.
+                  #
+                  #     usage:
+                  #       rules:
+                  #       - selector: "google.example.library.v1.LibraryService.CreateBook"
+                  #         allow_unregistered_calls: true
+                "selector": "A String", # Selects the methods to which this rule applies. Use '*' to indicate all
+                    # methods in all APIs.
+                    #
+                    # Refer to selector for syntax details.
+                "allowUnregisteredCalls": True or False, # True, if the method allows unregistered calls; false otherwise.
+              },
+            ],
+            "producerNotificationChannel": "A String", # The full resource name of a channel used for sending notifications to the
+                # service producer.
+                #
+                # Google Service Management currently only supports
+                # [Google Cloud Pub/Sub](https://cloud.google.com/pubsub) as a notification
+                # channel. To use Google Cloud Pub/Sub as the channel, this must be the name
+                # of a Cloud Pub/Sub topic that uses the Cloud Pub/Sub topic name format
+                # documented in https://cloud.google.com/pubsub/docs/overview.
+            "requirements": [ # Requirements that must be satisfied before a consumer project can use the
+                # service. Each requirement is of the form <service.name>/<requirement-id>;
+                # for example 'serviceusage.googleapis.com/billing-enabled'.
+              "A String",
+            ],
+          },
+          "configVersion": 42, # The version of the service configuration. The config version may
+              # influence interpretation of the configuration, for example, to
+              # determine defaults. This is documented together with applicable
+              # options. The current default for the config version itself is `3`.
+          "producerProjectId": "A String", # The id of the Google developer project that owns the service.
+              # Members of this project can manage the service configuration,
+              # manage consumption of the service, etc.
+          "http": { # Defines the HTTP configuration for a service. It contains a list of # HTTP configuration.
+              # HttpRule, each specifying the mapping of an RPC method
+              # to one or more HTTP REST API methods.
+            "rules": [ # A list of HTTP configuration rules that apply to individual API methods.
+                #
+                # **NOTE:** All service configuration rules follow "last one wins" order.
+              { # `HttpRule` defines the mapping of an RPC method to one or more HTTP
+                  # REST APIs.  The mapping determines what portions of the request
+                  # message are populated from the path, query parameters, or body of
+                  # the HTTP request.  The mapping is typically specified as an
+                  # `google.api.http` annotation, see "google/api/annotations.proto"
+                  # for details.
+                  #
+                  # The mapping consists of a field specifying the path template and
+                  # method kind.  The path template can refer to fields in the request
+                  # message, as in the example below which describes a REST GET
+                  # operation on a resource collection of messages:
+                  #
+                  #
+                  #     service Messaging {
+                  #       rpc GetMessage(GetMessageRequest) returns (Message) {
+                  #         option (google.api.http).get = "/v1/messages/{message_id}/{sub.subfield}";
+                  #       }
+                  #     }
+                  #     message GetMessageRequest {
+                  #       message SubMessage {
+                  #         string subfield = 1;
+                  #       }
+                  #       string message_id = 1; // mapped to the URL
+                  #       SubMessage sub = 2;    // `sub.subfield` is url-mapped
+                  #     }
+                  #     message Message {
+                  #       string text = 1; // content of the resource
+                  #     }
+                  #
+                  # The same http annotation can alternatively be expressed inside the
+                  # `GRPC API Configuration` YAML file.
+                  #
+                  #     http:
+                  #       rules:
+                  #         - selector: <proto_package_name>.Messaging.GetMessage
+                  #           get: /v1/messages/{message_id}/{sub.subfield}
+                  #
+                  # This definition enables an automatic, bidrectional mapping of HTTP
+                  # JSON to RPC. Example:
+                  #
+                  # HTTP | RPC
+                  # -----|-----
+                  # `GET /v1/messages/123456/foo`  | `GetMessage(message_id: "123456" sub: SubMessage(subfield: "foo"))`
+                  #
+                  # In general, not only fields but also field paths can be referenced
+                  # from a path pattern. Fields mapped to the path pattern cannot be
+                  # repeated and must have a primitive (non-message) type.
+                  #
+                  # Any fields in the request message which are not bound by the path
+                  # pattern automatically become (optional) HTTP query
+                  # parameters. Assume the following definition of the request message:
+                  #
+                  #
+                  #     message GetMessageRequest {
+                  #       message SubMessage {
+                  #         string subfield = 1;
+                  #       }
+                  #       string message_id = 1; // mapped to the URL
+                  #       int64 revision = 2;    // becomes a parameter
+                  #       SubMessage sub = 3;    // `sub.subfield` becomes a parameter
+                  #     }
+                  #
+                  #
+                  # This enables a HTTP JSON to RPC mapping as below:
+                  #
+                  # HTTP | RPC
+                  # -----|-----
+                  # `GET /v1/messages/123456?revision=2&sub.subfield=foo` | `GetMessage(message_id: "123456" revision: 2 sub: SubMessage(subfield: "foo"))`
+                  #
+                  # Note that fields which are mapped to HTTP parameters must have a
+                  # primitive type or a repeated primitive type. Message types are not
+                  # allowed. In the case of a repeated type, the parameter can be
+                  # repeated in the URL, as in `...?param=A&param=B`.
+                  #
+                  # For HTTP method kinds which allow a request body, the `body` field
+                  # specifies the mapping. Consider a REST update method on the
+                  # message resource collection:
+                  #
+                  #
+                  #     service Messaging {
+                  #       rpc UpdateMessage(UpdateMessageRequest) returns (Message) {
+                  #         option (google.api.http) = {
+                  #           put: "/v1/messages/{message_id}"
+                  #           body: "message"
+                  #         };
+                  #       }
+                  #     }
+                  #     message UpdateMessageRequest {
+                  #       string message_id = 1; // mapped to the URL
+                  #       Message message = 2;   // mapped to the body
+                  #     }
+                  #
+                  #
+                  # The following HTTP JSON to RPC mapping is enabled, where the
+                  # representation of the JSON in the request body is determined by
+                  # protos JSON encoding:
+                  #
+                  # HTTP | RPC
+                  # -----|-----
+                  # `PUT /v1/messages/123456 { "text": "Hi!" }` | `UpdateMessage(message_id: "123456" message { text: "Hi!" })`
+                  #
+                  # The special name `*` can be used in the body mapping to define that
+                  # every field not bound by the path template should be mapped to the
+                  # request body.  This enables the following alternative definition of
+                  # the update method:
+                  #
+                  #     service Messaging {
+                  #       rpc UpdateMessage(Message) returns (Message) {
+                  #         option (google.api.http) = {
+                  #           put: "/v1/messages/{message_id}"
+                  #           body: "*"
+                  #         };
+                  #       }
+                  #     }
+                  #     message Message {
+                  #       string message_id = 1;
+                  #       string text = 2;
+                  #     }
+                  #
+                  #
+                  # The following HTTP JSON to RPC mapping is enabled:
+                  #
+                  # HTTP | RPC
+                  # -----|-----
+                  # `PUT /v1/messages/123456 { "text": "Hi!" }` | `UpdateMessage(message_id: "123456" text: "Hi!")`
+                  #
+                  # Note that when using `*` in the body mapping, it is not possible to
+                  # have HTTP parameters, as all fields not bound by the path end in
+                  # the body. This makes this option more rarely used in practice of
+                  # defining REST APIs. The common usage of `*` is in custom methods
+                  # which don't use the URL at all for transferring data.
+                  #
+                  # It is possible to define multiple HTTP methods for one RPC by using
+                  # the `additional_bindings` option. Example:
+                  #
+                  #     service Messaging {
+                  #       rpc GetMessage(GetMessageRequest) returns (Message) {
+                  #         option (google.api.http) = {
+                  #           get: "/v1/messages/{message_id}"
+                  #           additional_bindings {
+                  #             get: "/v1/users/{user_id}/messages/{message_id}"
+                  #           }
+                  #         };
+                  #       }
+                  #     }
+                  #     message GetMessageRequest {
+                  #       string message_id = 1;
+                  #       string user_id = 2;
+                  #     }
+                  #
+                  #
+                  # This enables the following two alternative HTTP JSON to RPC
+                  # mappings:
+                  #
+                  # HTTP | RPC
+                  # -----|-----
+                  # `GET /v1/messages/123456` | `GetMessage(message_id: "123456")`
+                  # `GET /v1/users/me/messages/123456` | `GetMessage(user_id: "me" message_id: "123456")`
+                  #
+                  # # Rules for HTTP mapping
+                  #
+                  # The rules for mapping HTTP path, query parameters, and body fields
+                  # to the request message are as follows:
+                  #
+                  # 1. The `body` field specifies either `*` or a field path, or is
+                  #    omitted. If omitted, it assumes there is no HTTP body.
+                  # 2. Leaf fields (recursive expansion of nested messages in the
+                  #    request) can be classified into three types:
+                  #     (a) Matched in the URL template.
+                  #     (b) Covered by body (if body is `*`, everything except (a) fields;
+                  #         else everything under the body field)
+                  #     (c) All other fields.
+                  # 3. URL query parameters found in the HTTP request are mapped to (c) fields.
+                  # 4. Any body sent with an HTTP request can contain only (b) fields.
+                  #
+                  # The syntax of the path template is as follows:
+                  #
+                  #     Template = "/" Segments [ Verb ] ;
+                  #     Segments = Segment { "/" Segment } ;
+                  #     Segment  = "*" | "**" | LITERAL | Variable ;
+                  #     Variable = "{" FieldPath [ "=" Segments ] "}" ;
+                  #     FieldPath = IDENT { "." IDENT } ;
+                  #     Verb     = ":" LITERAL ;
+                  #
+                  # The syntax `*` matches a single path segment. It follows the semantics of
+                  # [RFC 6570](https://tools.ietf.org/html/rfc6570) Section 3.2.2 Simple String
+                  # Expansion.
+                  #
+                  # The syntax `**` matches zero or more path segments. It follows the semantics
+                  # of [RFC 6570](https://tools.ietf.org/html/rfc6570) Section 3.2.3 Reserved
+                  # Expansion. NOTE: it must be the last segment in the path except the Verb.
+                  #
+                  # The syntax `LITERAL` matches literal text in the URL path.
+                  #
+                  # The syntax `Variable` matches the entire path as specified by its template;
+                  # this nested template must not contain further variables. If a variable
+                  # matches a single path segment, its template may be omitted, e.g. `{var}`
+                  # is equivalent to `{var=*}`.
+                  #
+                  # NOTE: the field paths in variables and in the `body` must not refer to
+                  # repeated fields or map fields.
+                  #
+                  # Use CustomHttpPattern to specify any HTTP method that is not included in the
+                  # `pattern` field, such as HEAD, or "*" to leave the HTTP method unspecified for
+                  # a given URL path rule. The wild-card rule is useful for services that provide
+                  # content to Web (HTML) clients.
+                "body": "A String", # The name of the request field whose value is mapped to the HTTP body, or
+                    # `*` for mapping all fields not captured by the path pattern to the HTTP
+                    # body. NOTE: the referred field must not be a repeated field and must be
+                    # present at the top-level of request message type.
+                "selector": "A String", # Selects methods to which this rule applies.
+                    #
+                    # Refer to selector for syntax details.
+                "get": "A String", # Used for listing and getting information about resources.
+                "mediaDownload": { # Use this only for Scotty Requests. Do not use this for media support using # Use this only for Scotty Requests. Do not use this for bytestream methods.
+                    # For media support, add instead [][google.bytestream.RestByteStream] as an
+                    # API to your configuration.
+                    # Bytestream, add instead [][google.bytestream.RestByteStream] as an API to
+                    # your configuration for Bytestream methods.
+                  "enabled": True or False, # Whether download is enabled.
+                  "downloadService": "A String", # DO NOT USE THIS FIELD UNTIL THIS WARNING IS REMOVED.
+                      #
+                      # Specify name of the download service if one is used for download.
+                },
+                "additionalBindings": [ # Additional HTTP bindings for the selector. Nested bindings must
+                    # not contain an `additional_bindings` field themselves (that is,
+                    # the nesting may only be one level deep).
+                  # Object with schema name: HttpRule
+                ],
+                "mediaUpload": { # Use this only for Scotty Requests. Do not use this for media support using # Use this only for Scotty Requests. Do not use this for media support using
+                    # Bytestream, add instead
+                    # [][google.bytestream.RestByteStream] as an API to your
+                    # configuration for Bytestream methods.
+                    # Bytestream, add instead [][google.bytestream.RestByteStream] as an API to
+                    # your configuration for Bytestream methods.
+                  "enabled": True or False, # Whether upload is enabled.
+                  "uploadService": "A String", # DO NOT USE THIS FIELD UNTIL THIS WARNING IS REMOVED.
+                      #
+                      # Specify name of the upload service if one is used for upload.
+                },
+                "patch": "A String", # Used for updating a resource.
+                "responseBody": "A String", # The name of the response field whose value is mapped to the HTTP body of
+                    # response. Other response fields are ignored. This field is optional. When
+                    # not set, the response message will be used as HTTP body of response.
+                    # NOTE: the referred field must be not a repeated field and must be present
+                    # at the top-level of response message type.
+                "put": "A String", # Used for updating a resource.
+                "post": "A String", # Used for creating a resource.
+                "custom": { # A custom pattern is used for defining custom HTTP verb. # Custom pattern is used for defining custom verbs.
+                  "path": "A String", # The path matched by this custom verb.
+                  "kind": "A String", # The name of this custom HTTP verb.
+                },
+                "delete": "A String", # Used for deleting a resource.
+              },
+            ],
+          },
+          "apis": [ # A list of API interfaces exported by this service. Only the `name` field
+              # of the google.protobuf.Api needs to be provided by the configuration
+              # author, as the remaining fields will be derived from the IDL during the
+              # normalization process. It is an error to specify an API interface here
+              # which cannot be resolved against the associated IDL files.
+            { # Api is a light-weight descriptor for a protocol buffer service.
+              "name": "A String", # The fully qualified name of this api, including package name
+                  # followed by the api's simple name.
+              "sourceContext": { # `SourceContext` represents information about the source of a # Source context for the protocol buffer service represented by this
+                  # message.
+                  # protobuf element, like the file in which it is defined.
+                "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
+                    # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
+              },
+              "mixins": [ # Included APIs. See Mixin.
+                { # Declares an API to be included in this API. The including API must
+                    # redeclare all the methods from the included API, but documentation
+                    # and options are inherited as follows:
+                    #
+                    # - If after comment and whitespace stripping, the documentation
+                    #   string of the redeclared method is empty, it will be inherited
+                    #   from the original method.
+                    #
+                    # - Each annotation belonging to the service config (http,
+                    #   visibility) which is not set in the redeclared method will be
+                    #   inherited.
+                    #
+                    # - If an http annotation is inherited, the path pattern will be
+                    #   modified as follows. Any version prefix will be replaced by the
+                    #   version of the including API plus the root path if specified.
+                    #
+                    # Example of a simple mixin:
+                    #
+                    #     package google.acl.v1;
+                    #     service AccessControl {
+                    #       // Get the underlying ACL object.
+                    #       rpc GetAcl(GetAclRequest) returns (Acl) {
+                    #         option (google.api.http).get = "/v1/{resource=**}:getAcl";
+                    #       }
+                    #     }
+                    #
+                    #     package google.storage.v2;
+                    #     service Storage {
+                    #       //       rpc GetAcl(GetAclRequest) returns (Acl);
+                    #
+                    #       // Get a data record.
+                    #       rpc GetData(GetDataRequest) returns (Data) {
+                    #         option (google.api.http).get = "/v2/{resource=**}";
+                    #       }
+                    #     }
+                    #
+                    # Example of a mixin configuration:
+                    #
+                    #     apis:
+                    #     - name: google.storage.v2.Storage
+                    #       mixins:
+                    #       - name: google.acl.v1.AccessControl
+                    #
+                    # The mixin construct implies that all methods in `AccessControl` are
+                    # also declared with same name and request/response types in
+                    # `Storage`. A documentation generator or annotation processor will
+                    # see the effective `Storage.GetAcl` method after inherting
+                    # documentation and annotations as follows:
+                    #
+                    #     service Storage {
+                    #       // Get the underlying ACL object.
+                    #       rpc GetAcl(GetAclRequest) returns (Acl) {
+                    #         option (google.api.http).get = "/v2/{resource=**}:getAcl";
+                    #       }
+                    #       ...
+                    #     }
+                    #
+                    # Note how the version in the path pattern changed from `v1` to `v2`.
+                    #
+                    # If the `root` field in the mixin is specified, it should be a
+                    # relative path under which inherited HTTP paths are placed. Example:
+                    #
+                    #     apis:
+                    #     - name: google.storage.v2.Storage
+                    #       mixins:
+                    #       - name: google.acl.v1.AccessControl
+                    #         root: acls
+                    #
+                    # This implies the following inherited HTTP annotation:
+                    #
+                    #     service Storage {
+                    #       // Get the underlying ACL object.
+                    #       rpc GetAcl(GetAclRequest) returns (Acl) {
+                    #         option (google.api.http).get = "/v2/acls/{resource=**}:getAcl";
+                    #       }
+                    #       ...
+                    #     }
+                  "root": "A String", # If non-empty specifies a path under which inherited HTTP paths
+                      # are rooted.
+                  "name": "A String", # The fully qualified name of the API which is included.
+                },
+              ],
+              "syntax": "A String", # The source syntax of the service.
+              "version": "A String", # A version string for this api. If specified, must have the form
+                  # `major-version.minor-version`, as in `1.10`. If the minor version
+                  # is omitted, it defaults to zero. If the entire version field is
+                  # empty, the major version is derived from the package name, as
+                  # outlined below. If the field is not empty, the version in the
+                  # package name will be verified to be consistent with what is
+                  # provided here.
+                  #
+                  # The versioning schema uses [semantic
+                  # versioning](http://semver.org) where the major version number
+                  # indicates a breaking change and the minor version an additive,
+                  # non-breaking change. Both version numbers are signals to users
+                  # what to expect from different versions, and should be carefully
+                  # chosen based on the product plan.
+                  #
+                  # The major version is also reflected in the package name of the
+                  # API, which must end in `v<major-version>`, as in
+                  # `google.feature.v1`. For major versions 0 and 1, the suffix can
+                  # be omitted. Zero major versions must only be used for
+                  # experimental, none-GA apis.
+              "options": [ # Any metadata attached to the API.
+                { # A protocol buffer option, which can be attached to a message, field,
+                    # enumeration, etc.
+                  "name": "A String", # The option's name. For protobuf built-in options (options defined in
+                      # descriptor.proto), this is the short name. For example, `"map_entry"`.
+                      # For custom options, it should be the fully-qualified name. For example,
+                      # `"google.api.http"`.
+                  "value": { # The option's value packed in an Any message. If the value is a primitive,
+                      # the corresponding wrapper type defined in google/protobuf/wrappers.proto
+                      # should be used. If the value is an enum, it should be stored as an int32
+                      # value using the google.protobuf.Int32Value type.
+                    "a_key": "", # Properties of the object. Contains field @type with type URL.
+                  },
+                },
+              ],
+              "methods": [ # The methods of this api, in unspecified order.
+                { # Method represents a method of an api.
+                  "name": "A String", # The simple name of this method.
+                  "requestStreaming": True or False, # If true, the request is streamed.
+                  "responseTypeUrl": "A String", # The URL of the output message type.
+                  "requestTypeUrl": "A String", # A URL of the input message type.
+                  "responseStreaming": True or False, # If true, the response is streamed.
+                  "syntax": "A String", # The source syntax of this method.
+                  "options": [ # Any metadata attached to the method.
+                    { # A protocol buffer option, which can be attached to a message, field,
+                        # enumeration, etc.
+                      "name": "A String", # The option's name. For protobuf built-in options (options defined in
+                          # descriptor.proto), this is the short name. For example, `"map_entry"`.
+                          # For custom options, it should be the fully-qualified name. For example,
+                          # `"google.api.http"`.
+                      "value": { # The option's value packed in an Any message. If the value is a primitive,
+                          # the corresponding wrapper type defined in google/protobuf/wrappers.proto
+                          # should be used. If the value is an enum, it should be stored as an int32
+                          # value using the google.protobuf.Int32Value type.
+                        "a_key": "", # Properties of the object. Contains field @type with type URL.
+                      },
+                    },
+                  ],
+                },
+              ],
+            },
+          ],
+          "customError": { # Customize service error responses.  For example, list any service # Custom error configuration.
+              # specific protobuf types that can appear in error detail lists of
+              # error responses.
+              #
+              # Example:
+              #
+              #     custom_error:
+              #       types:
+              #       - google.foo.v1.CustomError
+              #       - google.foo.v1.AnotherError
+            "rules": [ # The list of custom error rules that apply to individual API messages.
+                #
+                # **NOTE:** All service configuration rules follow "last one wins" order.
+              { # A custom error rule.
+                "isErrorType": True or False, # Mark this message as possible payload in error response.  Otherwise,
+                    # objects of this type will be filtered when they appear in error payload.
+                "selector": "A String", # Selects messages to which this rule applies.
+                    #
+                    # Refer to selector for syntax details.
+              },
+            ],
+            "types": [ # The list of custom error detail types, e.g. 'google.foo.v1.CustomError'.
+              "A String",
+            ],
+          },
+          "visibility": { # `Visibility` defines restrictions for the visibility of service # API visibility configuration.
+              # elements.  Restrictions are specified using visibility labels
+              # (e.g., TRUSTED_TESTER) that are elsewhere linked to users and projects.
+              #
+              # Users and projects can have access to more than one visibility label. The
+              # effective visibility for multiple labels is the union of each label's
+              # elements, plus any unrestricted elements.
+              #
+              # If an element and its parents have no restrictions, visibility is
+              # unconditionally granted.
+              #
+              # Example:
+              #
+              #     visibility:
+              #       rules:
+              #       - selector: google.calendar.Calendar.EnhancedSearch
+              #         restriction: TRUSTED_TESTER
+              #       - selector: google.calendar.Calendar.Delegate
+              #         restriction: GOOGLE_INTERNAL
+              #
+              # Here, all methods are publicly visible except for the restricted methods
+              # EnhancedSearch and Delegate.
+            "rules": [ # A list of visibility rules that apply to individual API elements.
+                #
+                # **NOTE:** All service configuration rules follow "last one wins" order.
+              { # A visibility rule provides visibility configuration for an individual API
+                  # element.
+                "restriction": "A String", # A comma-separated list of visibility labels that apply to the `selector`.
+                    # Any of the listed labels can be used to grant the visibility.
+                    #
+                    # If a rule has multiple labels, removing one of the labels but not all of
+                    # them can break clients.
+                    #
+                    # Example:
+                    #
+                    #     visibility:
+                    #       rules:
+                    #       - selector: google.calendar.Calendar.EnhancedSearch
+                    #         restriction: GOOGLE_INTERNAL, TRUSTED_TESTER
+                    #
+                    # Removing GOOGLE_INTERNAL from this restriction will break clients that
+                    # rely on this method and only had access to it through GOOGLE_INTERNAL.
+                "selector": "A String", # Selects methods, messages, fields, enums, etc. to which this rule applies.
+                    #
+                    # Refer to selector for syntax details.
+              },
+            ],
+          },
+          "metrics": [ # Defines the metrics used by this service.
+            { # Defines a metric type and its schema. Once a metric descriptor is created,
+                # deleting or altering it stops data collection and makes the metric type's
+                # existing data unusable.
+              "displayName": "A String", # A concise name for the metric, which can be displayed in user interfaces.
+                  # Use sentence case without an ending period, for example "Request count".
+              "description": "A String", # A detailed description of the metric, which can be used in documentation.
+              "metricKind": "A String", # Whether the metric records instantaneous values, changes to a value, etc.
+                  # Some combinations of `metric_kind` and `value_type` might not be supported.
+              "valueType": "A String", # Whether the measurement is an integer, a floating-point number, etc.
+                  # Some combinations of `metric_kind` and `value_type` might not be supported.
+              "labels": [ # The set of labels that can be used to describe a specific
+                  # instance of this metric type. For example, the
+                  # `appengine.googleapis.com/http/server/response_latencies` metric
+                  # type has a label for the HTTP response code, `response_code`, so
+                  # you can look at latencies for successful responses or just
+                  # for responses that failed.
+                { # A description of a label.
+                  "valueType": "A String", # The type of data that can be assigned to the label.
+                  "description": "A String", # A human-readable description for the label.
+                  "key": "A String", # The label key.
+                },
+              ],
+              "type": "A String", # The metric type, including its DNS name prefix. The type is not
+                  # URL-encoded.  All user-defined custom metric types have the DNS name
+                  # `custom.googleapis.com`.  Metric types should use a natural hierarchical
+                  # grouping. For example:
+                  #
+                  #     "custom.googleapis.com/invoice/paid/amount"
+                  #     "appengine.googleapis.com/http/server/response_latencies"
+              "unit": "A String", # The unit in which the metric value is reported. It is only applicable
+                  # if the `value_type` is `INT64`, `DOUBLE`, or `DISTRIBUTION`. The
+                  # supported units are a subset of [The Unified Code for Units of
+                  # Measure](http://unitsofmeasure.org/ucum.html) standard:
+                  #
+                  # **Basic units (UNIT)**
+                  #
+                  # * `bit`   bit
+                  # * `By`    byte
+                  # * `s`     second
+                  # * `min`   minute
+                  # * `h`     hour
+                  # * `d`     day
+                  #
+                  # **Prefixes (PREFIX)**
+                  #
+                  # * `k`     kilo    (10**3)
+                  # * `M`     mega    (10**6)
+                  # * `G`     giga    (10**9)
+                  # * `T`     tera    (10**12)
+                  # * `P`     peta    (10**15)
+                  # * `E`     exa     (10**18)
+                  # * `Z`     zetta   (10**21)
+                  # * `Y`     yotta   (10**24)
+                  # * `m`     milli   (10**-3)
+                  # * `u`     micro   (10**-6)
+                  # * `n`     nano    (10**-9)
+                  # * `p`     pico    (10**-12)
+                  # * `f`     femto   (10**-15)
+                  # * `a`     atto    (10**-18)
+                  # * `z`     zepto   (10**-21)
+                  # * `y`     yocto   (10**-24)
+                  # * `Ki`    kibi    (2**10)
+                  # * `Mi`    mebi    (2**20)
+                  # * `Gi`    gibi    (2**30)
+                  # * `Ti`    tebi    (2**40)
+                  #
+                  # **Grammar**
+                  #
+                  # The grammar includes the dimensionless unit `1`, such as `1/s`.
+                  #
+                  # The grammar also includes these connectors:
+                  #
+                  # * `/`    division (as an infix operator, e.g. `1/s`).
+                  # * `.`    multiplication (as an infix operator, e.g. `GBy.d`)
+                  #
+                  # The grammar for a unit is as follows:
+                  #
+                  #     Expression = Component { "." Component } { "/" Component } ;
+                  #
+                  #     Component = [ PREFIX ] UNIT [ Annotation ]
+                  #               | Annotation
+                  #               | "1"
+                  #               ;
+                  #
+                  #     Annotation = "{" NAME "}" ;
+                  #
+                  # Notes:
+                  #
+                  # * `Annotation` is just a comment if it follows a `UNIT` and is
+                  #    equivalent to `1` if it is used alone. For examples,
+                  #    `{requests}/s == 1/s`, `By{transmitted}/s == By/s`.
+                  # * `NAME` is a sequence of non-blank printable ASCII characters not
+                  #    containing '{' or '}'.
+              "name": "A String", # The resource name of the metric descriptor. Depending on the
+                  # implementation, the name typically includes: (1) the parent resource name
+                  # that defines the scope of the metric type or of its data; and (2) the
+                  # metric's URL-encoded type, which also appears in the `type` field of this
+                  # descriptor. For example, following is the resource name of a custom
+                  # metric within the GCP project `my-project-id`:
+                  #
+                  #     "projects/my-project-id/metricDescriptors/custom.googleapis.com%2Finvoice%2Fpaid%2Famount"
+            },
+          ],
+          "enums": [ # A list of all enum types included in this API service.  Enums
+              # referenced directly or indirectly by the `apis` are automatically
+              # included.  Enums which are not referenced but shall be included
+              # should be listed here by name. Example:
+              #
+              #     enums:
+              #     - name: google.someapi.v1.SomeEnum
+            { # Enum type definition.
+              "sourceContext": { # `SourceContext` represents information about the source of a # The source context.
+                  # protobuf element, like the file in which it is defined.
+                "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
+                    # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
+              },
+              "enumvalue": [ # Enum value definitions.
+                { # Enum value definition.
+                  "options": [ # Protocol buffer options.
+                    { # A protocol buffer option, which can be attached to a message, field,
+                        # enumeration, etc.
+                      "name": "A String", # The option's name. For protobuf built-in options (options defined in
+                          # descriptor.proto), this is the short name. For example, `"map_entry"`.
+                          # For custom options, it should be the fully-qualified name. For example,
+                          # `"google.api.http"`.
+                      "value": { # The option's value packed in an Any message. If the value is a primitive,
+                          # the corresponding wrapper type defined in google/protobuf/wrappers.proto
+                          # should be used. If the value is an enum, it should be stored as an int32
+                          # value using the google.protobuf.Int32Value type.
+                        "a_key": "", # Properties of the object. Contains field @type with type URL.
+                      },
+                    },
+                  ],
+                  "number": 42, # Enum value number.
+                  "name": "A String", # Enum value name.
+                },
+              ],
+              "options": [ # Protocol buffer options.
+                { # A protocol buffer option, which can be attached to a message, field,
+                    # enumeration, etc.
+                  "name": "A String", # The option's name. For protobuf built-in options (options defined in
+                      # descriptor.proto), this is the short name. For example, `"map_entry"`.
+                      # For custom options, it should be the fully-qualified name. For example,
+                      # `"google.api.http"`.
+                  "value": { # The option's value packed in an Any message. If the value is a primitive,
+                      # the corresponding wrapper type defined in google/protobuf/wrappers.proto
+                      # should be used. If the value is an enum, it should be stored as an int32
+                      # value using the google.protobuf.Int32Value type.
+                    "a_key": "", # Properties of the object. Contains field @type with type URL.
+                  },
+                },
+              ],
+              "name": "A String", # Enum type name.
+              "syntax": "A String", # The source syntax.
+            },
+          ],
+          "types": [ # A list of all proto message types included in this API service.
+              # Types referenced directly or indirectly by the `apis` are
+              # automatically included.  Messages which are not referenced but
+              # shall be included, such as types used by the `google.protobuf.Any` type,
+              # should be listed here by name. Example:
+              #
+              #     types:
+              #     - name: google.protobuf.Int32
+            { # A protocol buffer message type.
+              "oneofs": [ # The list of types appearing in `oneof` definitions in this type.
+                "A String",
+              ],
+              "name": "A String", # The fully qualified message name.
+              "sourceContext": { # `SourceContext` represents information about the source of a # The source context.
+                  # protobuf element, like the file in which it is defined.
+                "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
+                    # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
+              },
+              "syntax": "A String", # The source syntax.
+              "fields": [ # The list of fields.
+                { # A single field of a message type.
+                  "kind": "A String", # The field type.
+                  "oneofIndex": 42, # The index of the field type in `Type.oneofs`, for message or enumeration
+                      # types. The first type has index 1; zero means the type is not in the list.
+                  "typeUrl": "A String", # The field type URL, without the scheme, for message or enumeration
+                      # types. Example: `"type.googleapis.com/google.protobuf.Timestamp"`.
+                  "name": "A String", # The field name.
+                  "defaultValue": "A String", # The string value of the default value of this field. Proto2 syntax only.
+                  "jsonName": "A String", # The field JSON name.
+                  "number": 42, # The field number.
+                  "cardinality": "A String", # The field cardinality.
+                  "options": [ # The protocol buffer options.
+                    { # A protocol buffer option, which can be attached to a message, field,
+                        # enumeration, etc.
+                      "name": "A String", # The option's name. For protobuf built-in options (options defined in
+                          # descriptor.proto), this is the short name. For example, `"map_entry"`.
+                          # For custom options, it should be the fully-qualified name. For example,
+                          # `"google.api.http"`.
+                      "value": { # The option's value packed in an Any message. If the value is a primitive,
+                          # the corresponding wrapper type defined in google/protobuf/wrappers.proto
+                          # should be used. If the value is an enum, it should be stored as an int32
+                          # value using the google.protobuf.Int32Value type.
+                        "a_key": "", # Properties of the object. Contains field @type with type URL.
+                      },
+                    },
+                  ],
+                  "packed": True or False, # Whether to use alternative packed wire representation.
+                },
+              ],
+              "options": [ # The protocol buffer options.
+                { # A protocol buffer option, which can be attached to a message, field,
+                    # enumeration, etc.
+                  "name": "A String", # The option's name. For protobuf built-in options (options defined in
+                      # descriptor.proto), this is the short name. For example, `"map_entry"`.
+                      # For custom options, it should be the fully-qualified name. For example,
+                      # `"google.api.http"`.
+                  "value": { # The option's value packed in an Any message. If the value is a primitive,
+                      # the corresponding wrapper type defined in google/protobuf/wrappers.proto
+                      # should be used. If the value is an enum, it should be stored as an int32
+                      # value using the google.protobuf.Int32Value type.
+                    "a_key": "", # Properties of the object. Contains field @type with type URL.
+                  },
+                },
+              ],
+            },
+          ],
+          "logging": { # Logging configuration of the service. # Logging configuration.
+              #
+              # The following example shows how to configure logs to be sent to the
+              # producer and consumer projects. In the example, the `activity_history`
+              # log is sent to both the producer and consumer projects, whereas the
+              # `purchase_history` log is only sent to the producer project.
+              #
+              #     monitored_resources:
+              #     - type: library.googleapis.com/branch
+              #       labels:
+              #       - key: /city
+              #         description: The city where the library branch is located in.
+              #       - key: /name
+              #         description: The name of the branch.
+              #     logs:
+              #     - name: activity_history
+              #       labels:
+              #       - key: /customer_id
+              #     - name: purchase_history
+              #     logging:
+              #       producer_destinations:
+              #       - monitored_resource: library.googleapis.com/branch
+              #         logs:
+              #         - activity_history
+              #         - purchase_history
+              #       consumer_destinations:
+              #       - monitored_resource: library.googleapis.com/branch
+              #         logs:
+              #         - activity_history
+            "producerDestinations": [ # Logging configurations for sending logs to the producer project.
+                # There can be multiple producer destinations, each one must have a
+                # different monitored resource type. A log can be used in at most
+                # one producer destination.
+              { # Configuration of a specific logging destination (the producer project
+                  # or the consumer project).
+                "monitoredResource": "A String", # The monitored resource type. The type must be defined in the
+                    # Service.monitored_resources section.
+                "logs": [ # Names of the logs to be sent to this destination. Each name must
+                    # be defined in the Service.logs section. If the log name is
+                    # not a domain scoped name, it will be automatically prefixed with
+                    # the service name followed by "/".
+                  "A String",
+                ],
+              },
+            ],
+            "consumerDestinations": [ # Logging configurations for sending logs to the consumer project.
+                # There can be multiple consumer destinations, each one must have a
+                # different monitored resource type. A log can be used in at most
+                # one consumer destination.
+              { # Configuration of a specific logging destination (the producer project
+                  # or the consumer project).
+                "monitoredResource": "A String", # The monitored resource type. The type must be defined in the
+                    # Service.monitored_resources section.
+                "logs": [ # Names of the logs to be sent to this destination. Each name must
+                    # be defined in the Service.logs section. If the log name is
+                    # not a domain scoped name, it will be automatically prefixed with
+                    # the service name followed by "/".
+                  "A String",
+                ],
+              },
+            ],
+          },
+          "name": "A String", # The DNS address at which this service is available,
+              # e.g. `calendar.googleapis.com`.
+          "documentation": { # `Documentation` provides the information for describing a service. # Additional API documentation.
+              #
+              # Example:
+              # <pre><code>documentation:
+              #   summary: >
+              #     The Google Calendar API gives access
+              #     to most calendar features.
+              #   pages:
+              #   - name: Overview
+              #     content: &#40;== include google/foo/overview.md ==&#41;
+              #   - name: Tutorial
+              #     content: &#40;== include google/foo/tutorial.md ==&#41;
+              #     subpages;
+              #     - name: Java
+              #       content: &#40;== include google/foo/tutorial_java.md ==&#41;
+              #   rules:
+              #   - selector: google.calendar.Calendar.Get
+              #     description: >
+              #       ...
+              #   - selector: google.calendar.Calendar.Put
+              #     description: >
+              #       ...
+              # </code></pre>
+              # Documentation is provided in markdown syntax. In addition to
+              # standard markdown features, definition lists, tables and fenced
+              # code blocks are supported. Section headers can be provided and are
+              # interpreted relative to the section nesting of the context where
+              # a documentation fragment is embedded.
+              #
+              # Documentation from the IDL is merged with documentation defined
+              # via the config at normalization time, where documentation provided
+              # by config rules overrides IDL provided.
+              #
+              # A number of constructs specific to the API platform are supported
+              # in documentation text.
+              #
+              # In order to reference a proto element, the following
+              # notation can be used:
+              # <pre><code>&#91;fully.qualified.proto.name]&#91;]</code></pre>
+              # To override the display text used for the link, this can be used:
+              # <pre><code>&#91;display text]&#91;fully.qualified.proto.name]</code></pre>
+              # Text can be excluded from doc using the following notation:
+              # <pre><code>&#40;-- internal comment --&#41;</code></pre>
+              # Comments can be made conditional using a visibility label. The below
+              # text will be only rendered if the `BETA` label is available:
+              # <pre><code>&#40;--BETA: comment for BETA users --&#41;</code></pre>
+              # A few directives are available in documentation. Note that
+              # directives must appear on a single line to be properly
+              # identified. The `include` directive includes a markdown file from
+              # an external source:
+              # <pre><code>&#40;== include path/to/file ==&#41;</code></pre>
+              # The `resource_for` directive marks a message to be the resource of
+              # a collection in REST view. If it is not specified, tools attempt
+              # to infer the resource from the operations in a collection:
+              # <pre><code>&#40;== resource_for v1.shelves.books ==&#41;</code></pre>
+              # The directive `suppress_warning` does not directly affect documentation
+              # and is documented together with service config validation.
+            "rules": [ # A list of documentation rules that apply to individual API elements.
+                #
+                # **NOTE:** All service configuration rules follow "last one wins" order.
+              { # A documentation rule provides information about individual API elements.
+                "description": "A String", # Description of the selected API(s).
+                "deprecationDescription": "A String", # Deprecation description of the selected element(s). It can be provided if an
+                    # element is marked as `deprecated`.
+                "selector": "A String", # The selector is a comma-separated list of patterns. Each pattern is a
+                    # qualified name of the element which may end in "*", indicating a wildcard.
+                    # Wildcards are only allowed at the end and for a whole component of the
+                    # qualified name, i.e. "foo.*" is ok, but not "foo.b*" or "foo.*.bar". To
+                    # specify a default for all applicable elements, the whole pattern "*"
+                    # is used.
+              },
+            ],
+            "documentationRootUrl": "A String", # The URL to the root of documentation.
+            "overview": "A String", # Declares a single overview page. For example:
+                # <pre><code>documentation:
+                #   summary: ...
+                #   overview: &#40;== include overview.md ==&#41;
+                # </code></pre>
+                # This is a shortcut for the following declaration (using pages style):
+                # <pre><code>documentation:
+                #   summary: ...
+                #   pages:
+                #   - name: Overview
+                #     content: &#40;== include overview.md ==&#41;
+                # </code></pre>
+                # Note: you cannot specify both `overview` field and `pages` field.
+            "pages": [ # The top level pages for the documentation set.
+              { # Represents a documentation page. A page can contain subpages to represent
+                  # nested documentation set structure.
+                "content": "A String", # The Markdown content of the page. You can use <code>&#40;== include {path} ==&#41;</code>
+                    # to include content from a Markdown file.
+                "subpages": [ # Subpages of this page. The order of subpages specified here will be
+                    # honored in the generated docset.
+                  # Object with schema name: Page
+                ],
+                "name": "A String", # The name of the page. It will be used as an identity of the page to
+                    # generate URI of the page, text of the link to this page in navigation,
+                    # etc. The full page name (start from the root page name to this page
+                    # concatenated with `.`) can be used as reference to the page in your
+                    # documentation. For example:
+                    # <pre><code>pages:
+                    # - name: Tutorial
+                    #   content: &#40;== include tutorial.md ==&#41;
+                    #   subpages:
+                    #   - name: Java
+                    #     content: &#40;== include tutorial_java.md ==&#41;
+                    # </code></pre>
+                    # You can reference `Java` page using Markdown reference link syntax:
+                    # `Java`.
+              },
+            ],
+            "summary": "A String", # A short summary of what the service does. Can only be provided by
+                # plain text.
+          },
+          "sourceInfo": { # Source information used to create a Service Config # Output only. The source information for this configuration if available.
+            "sourceFiles": [ # All files used during config generation.
+              {
+                "a_key": "", # Properties of the object. Contains field @type with type URL.
+              },
+            ],
+          },
+          "systemTypes": [ # A list of all proto message types included in this API service.
+              # It serves similar purpose as [google.api.Service.types], except that
+              # these types are not needed by user-defined APIs. Therefore, they will not
+              # show up in the generated discovery doc. This field should only be used
+              # to define system APIs in ESF.
+            { # A protocol buffer message type.
+              "oneofs": [ # The list of types appearing in `oneof` definitions in this type.
+                "A String",
+              ],
+              "name": "A String", # The fully qualified message name.
+              "sourceContext": { # `SourceContext` represents information about the source of a # The source context.
+                  # protobuf element, like the file in which it is defined.
+                "fileName": "A String", # The path-qualified name of the .proto file that contained the associated
+                    # protobuf element.  For example: `"google/protobuf/source_context.proto"`.
+              },
+              "syntax": "A String", # The source syntax.
+              "fields": [ # The list of fields.
+                { # A single field of a message type.
+                  "kind": "A String", # The field type.
+                  "oneofIndex": 42, # The index of the field type in `Type.oneofs`, for message or enumeration
+                      # types. The first type has index 1; zero means the type is not in the list.
+                  "typeUrl": "A String", # The field type URL, without the scheme, for message or enumeration
+                      # types. Example: `"type.googleapis.com/google.protobuf.Timestamp"`.
+                  "name": "A String", # The field name.
+                  "defaultValue": "A String", # The string value of the default value of this field. Proto2 syntax only.
+                  "jsonName": "A String", # The field JSON name.
+                  "number": 42, # The field number.
+                  "cardinality": "A String", # The field cardinality.
+                  "options": [ # The protocol buffer options.
+                    { # A protocol buffer option, which can be attached to a message, field,
+                        # enumeration, etc.
+                      "name": "A String", # The option's name. For protobuf built-in options (options defined in
+                          # descriptor.proto), this is the short name. For example, `"map_entry"`.
+                          # For custom options, it should be the fully-qualified name. For example,
+                          # `"google.api.http"`.
+                      "value": { # The option's value packed in an Any message. If the value is a primitive,
+                          # the corresponding wrapper type defined in google/protobuf/wrappers.proto
+                          # should be used. If the value is an enum, it should be stored as an int32
+                          # value using the google.protobuf.Int32Value type.
+                        "a_key": "", # Properties of the object. Contains field @type with type URL.
+                      },
+                    },
+                  ],
+                  "packed": True or False, # Whether to use alternative packed wire representation.
+                },
+              ],
+              "options": [ # The protocol buffer options.
+                { # A protocol buffer option, which can be attached to a message, field,
+                    # enumeration, etc.
+                  "name": "A String", # The option's name. For protobuf built-in options (options defined in
+                      # descriptor.proto), this is the short name. For example, `"map_entry"`.
+                      # For custom options, it should be the fully-qualified name. For example,
+                      # `"google.api.http"`.
+                  "value": { # The option's value packed in an Any message. If the value is a primitive,
+                      # the corresponding wrapper type defined in google/protobuf/wrappers.proto
+                      # should be used. If the value is an enum, it should be stored as an int32
+                      # value using the google.protobuf.Int32Value type.
+                    "a_key": "", # Properties of the object. Contains field @type with type URL.
+                  },
+                },
+              ],
+            },
+          ],
+          "context": { # `Context` defines which contexts an API requests. # Context configuration.
+              #
+              # Example:
+              #
+              #     context:
+              #       rules:
+              #       - selector: "*"
+              #         requested:
+              #         - google.rpc.context.ProjectContext
+              #         - google.rpc.context.OriginContext
+              #
+              # The above specifies that all methods in the API request
+              # `google.rpc.context.ProjectContext` and
+              # `google.rpc.context.OriginContext`.
+              #
+              # Available context types are defined in package
+              # `google.rpc.context`.
+            "rules": [ # A list of RPC context rules that apply to individual API methods.
+                #
+                # **NOTE:** All service configuration rules follow "last one wins" order.
+              { # A context rule provides information about the context for an individual API
+                  # element.
+                "requested": [ # A list of full type names of requested contexts.
+                  "A String",
+                ],
+                "provided": [ # A list of full type names of provided contexts.
+                  "A String",
+                ],
+                "selector": "A String", # Selects the methods to which this rule applies.
+                    #
+                    # Refer to selector for syntax details.
+              },
+            ],
+          },
+          "title": "A String", # The product title associated with this service.
+          "endpoints": [ # Configuration for network endpoints.  If this is empty, then an endpoint
+              # with the same name as the service is automatically generated to service all
+              # defined APIs.
+            { # `Endpoint` describes a network endpoint that serves a set of APIs.
+                # A service may expose any number of endpoints, and all endpoints share the
+                # same service configuration, such as quota configuration and monitoring
+                # configuration.
+                #
+                # Example service configuration:
+                #
+                #     name: library-example.googleapis.com
+                #     endpoints:
+                #       # Below entry makes 'google.example.library.v1.Library'
+                #       # API be served from endpoint address library-example.googleapis.com.
+                #       # It also allows HTTP OPTIONS calls to be passed to the backend, for
+                #       # it to decide whether the subsequent cross-origin request is
+                #       # allowed to proceed.
+                #     - name: library-example.googleapis.com
+                #       allow_cors: true
+              "allowCors": True or False, # Allowing
+                  # [CORS](https://en.wikipedia.org/wiki/Cross-origin_resource_sharing), aka
+                  # cross-domain traffic, would allow the backends served from this endpoint to
+                  # receive and respond to HTTP OPTIONS requests. The response will be used by
+                  # the browser to determine whether the subsequent cross-origin request is
+                  # allowed to proceed.
+              "aliases": [ # DEPRECATED: This field is no longer supported. Instead of using aliases,
+                  # please specify multiple google.api.Endpoint for each of the intented
+                  # alias.
+                  #
+                  # Additional names that this endpoint will be hosted on.
+                "A String",
+              ],
+              "features": [ # The list of features enabled on this endpoint.
+                "A String",
+              ],
+              "name": "A String", # The canonical name of this endpoint.
+              "apis": [ # The list of APIs served by this endpoint.
+                "A String",
+              ],
+            },
+          ],
+          "experimental": { # Experimental service configuration. These configuration options can # Experimental configuration.
+              # only be used by whitelisted users.
+            "authorization": { # Configuration of authorization. # Authorization configuration.
+                #
+                # This section determines the authorization provider, if unspecified, then no
+                # authorization check will be done.
+                #
+                # Example:
+                #
+                #     experimental:
+                #       authorization:
+                #         provider: firebaserules.googleapis.com
+              "provider": "A String", # The name of the authorization provider, such as
+                  # firebaserules.googleapis.com.
+            },
+          },
+        },
+      },
+    ],
+    "nextPageToken": "A String", # Token that can be passed to `ListEnabledServices` to resume a paginated
+        # query.
+  }</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>
+
+</body></html>
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