Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
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+
+<h1><a href="file_v1.html">Cloud Filestore API</a> . <a href="file_v1.projects.html">projects</a> . <a href="file_v1.projects.locations.html">locations</a> . <a href="file_v1.projects.locations.instances.html">instances</a></h1>
+<h2>Instance Methods</h2>
+<p class="toc_element">
+  <code><a href="#create">create(parent, body, instanceId=None, x__xgafv=None)</a></code></p>
+<p class="firstline">Creates an instance.</p>
+<p class="toc_element">
+  <code><a href="#delete">delete(name, x__xgafv=None)</a></code></p>
+<p class="firstline">Deletes an instance.</p>
+<p class="toc_element">
+  <code><a href="#get">get(name, x__xgafv=None)</a></code></p>
+<p class="firstline">Gets the details of a specific instance.</p>
+<p class="toc_element">
+  <code><a href="#list">list(parent, orderBy=None, pageSize=None, pageToken=None, x__xgafv=None, filter=None)</a></code></p>
+<p class="firstline">Lists all instances in a project for either a specified location</p>
+<p class="toc_element">
+  <code><a href="#list_next">list_next(previous_request, previous_response)</a></code></p>
+<p class="firstline">Retrieves the next page of results.</p>
+<p class="toc_element">
+  <code><a href="#patch">patch(name, body, updateMask=None, x__xgafv=None)</a></code></p>
+<p class="firstline">Updates the settings of a specific instance.</p>
+<h3>Method Details</h3>
+<div class="method">
+    <code class="details" id="create">create(parent, body, instanceId=None, x__xgafv=None)</code>
+  <pre>Creates an instance.
+
+Args:
+  parent: string, The instance's project and location, in the format
+projects/{project_id}/locations/{location}. In Cloud Filestore,
+locations map to GCP zones, for example **us-west1-b**. (required)
+  body: object, The request body. (required)
+    The object takes the form of:
+
+{ # A Cloud Filestore instance.
+    "description": "A String", # Optional. A description of the instance (2048 characters or less).
+    "labels": { # Resource labels to represent user provided metadata.
+      "a_key": "A String",
+    },
+    "networks": [ # VPC networks to which the instance is connected.
+        # For this version, only a single network is supported.
+      { # Network configuration for the instance.
+        "reservedIpRange": "A String", # A /29 CIDR block in one of the
+            # [internal IP address
+            # ranges](https://www.arin.net/knowledge/address_filters.html) that
+            # identifies the range of IP addresses reserved for this instance. For
+            # example, 10.0.0.0/29 or 192.168.0.0/29. The range you specify can't overlap
+            # with either existing subnets or assigned IP address ranges for other Cloud
+            # Filestore instances in the selected VPC network.
+        "modes": [ # Internet protocol versions for which the instance has IP addresses
+            # assigned. For this version, only MODE_IPV4 is supported.
+          "A String",
+        ],
+        "ipAddresses": [ # Output only.
+            # IPv4 addresses in the format
+            # {octet 1}.{octet 2}.{octet 3}.{octet 4} or IPv6 addresses in the format
+            # {block 1}:{block 2}:{block 3}:{block 4}:{block 5}:{block 6}:{block
+            # 7}:{block 8}.
+          "A String",
+        ],
+        "network": "A String", # The name of the Google Compute Engine
+            # [VPC network](/compute/docs/networks-and-firewalls#networks) to which the
+            # instance is connected.
+      },
+    ],
+    "state": "A String", # Output only.
+        # The instance state.
+    "etag": "A String", # Server-specified ETag for the instance resource to prevent simultaneous
+        # updates from overwriting each other.
+    "fileShares": [ # File system shares on the instance.
+        # For this version, only a single file share is supported.
+      { # File share configuration for the instance.
+        "capacityGb": "A String", # File share capacity in gigabytes (GB).
+            # Cloud Filestore defines 1 GB as 1024^3 bytes.
+        "name": "A String", # The name of the file share (must be 16 characters or less).
+      },
+    ],
+    "tier": "A String", # The service tier of the instance.
+    "createTime": "A String", # Output only.
+        # The time when the instance was created.
+    "statusMessage": "A String", # Output only.
+        # Additional information about the instance state, if available.
+    "name": "A String", # Output only.
+        # The resource name of the instance, in the format
+        # projects/{project_id}/locations/{location_id}/instances/{instance_id}.
+  }
+
+  instanceId: string, The name of the instance to create.
+The name must be unique for the specified project and location.
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # This resource represents a long-running operation that is the result of a
+      # network API call.
+    "metadata": { # Service-specific metadata associated with the operation.  It typically
+        # contains progress information and common metadata such as create time.
+        # Some services might not provide such metadata.  Any method that returns a
+        # long-running operation should document the metadata type, if any.
+      "a_key": "", # Properties of the object. Contains field @type with type URL.
+    },
+    "error": { # The `Status` type defines a logical error model that is suitable for # The error result of the operation in case of failure or cancellation.
+        # different programming environments, including REST APIs and RPC APIs. It is
+        # used by [gRPC](https://github.com/grpc). The error model is designed to be:
+        #
+        # - Simple to use and understand for most users
+        # - Flexible enough to meet unexpected needs
+        #
+        # # Overview
+        #
+        # The `Status` message contains three pieces of data: error code, error
+        # message, and error details. The error code should be an enum value of
+        # google.rpc.Code, but it may accept additional error codes if needed.  The
+        # error message should be a developer-facing English message that helps
+        # developers *understand* and *resolve* the error. If a localized user-facing
+        # error message is needed, put the localized message in the error details or
+        # localize it in the client. The optional error details may contain arbitrary
+        # information about the error. There is a predefined set of error detail types
+        # in the package `google.rpc` that can be used for common error conditions.
+        #
+        # # Language mapping
+        #
+        # The `Status` message is the logical representation of the error model, but it
+        # is not necessarily the actual wire format. When the `Status` message is
+        # exposed in different client libraries and different wire protocols, it can be
+        # mapped differently. For example, it will likely be mapped to some exceptions
+        # in Java, but more likely mapped to some error codes in C.
+        #
+        # # Other uses
+        #
+        # The error model and the `Status` message can be used in a variety of
+        # environments, either with or without APIs, to provide a
+        # consistent developer experience across different environments.
+        #
+        # Example uses of this error model include:
+        #
+        # - Partial errors. If a service needs to return partial errors to the client,
+        #     it may embed the `Status` in the normal response to indicate the partial
+        #     errors.
+        #
+        # - Workflow errors. A typical workflow has multiple steps. Each step may
+        #     have a `Status` message for error reporting.
+        #
+        # - Batch operations. If a client uses batch request and batch response, the
+        #     `Status` message should be used directly inside batch response, one for
+        #     each error sub-response.
+        #
+        # - Asynchronous operations. If an API call embeds asynchronous operation
+        #     results in its response, the status of those operations should be
+        #     represented directly using the `Status` message.
+        #
+        # - Logging. If some API errors are stored in logs, the message `Status` could
+        #     be used directly after any stripping needed for security/privacy reasons.
+      "message": "A String", # A developer-facing error message, which should be in English. Any
+          # user-facing error message should be localized and sent in the
+          # google.rpc.Status.details field, or localized by the client.
+      "code": 42, # The status code, which should be an enum value of google.rpc.Code.
+      "details": [ # A list of messages that carry the error details.  There is a common set of
+          # message types for APIs to use.
+        {
+          "a_key": "", # Properties of the object. Contains field @type with type URL.
+        },
+      ],
+    },
+    "done": True or False, # If the value is `false`, it means the operation is still in progress.
+        # If `true`, the operation is completed, and either `error` or `response` is
+        # available.
+    "response": { # The normal response of the operation in case of success.  If the original
+        # method returns no data on success, such as `Delete`, the response is
+        # `google.protobuf.Empty`.  If the original method is standard
+        # `Get`/`Create`/`Update`, the response should be the resource.  For other
+        # methods, the response should have the type `XxxResponse`, where `Xxx`
+        # is the original method name.  For example, if the original method name
+        # is `TakeSnapshot()`, the inferred response type is
+        # `TakeSnapshotResponse`.
+      "a_key": "", # Properties of the object. Contains field @type with type URL.
+    },
+    "name": "A String", # The server-assigned name, which is only unique within the same service that
+        # originally returns it. If you use the default HTTP mapping, the
+        # `name` should be a resource name ending with `operations/{unique_id}`.
+  }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="delete">delete(name, x__xgafv=None)</code>
+  <pre>Deletes an instance.
+
+Args:
+  name: string, The instance resource name, in the format
+projects/{project_id}/locations/{location}/instances/{instance_id} (required)
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # This resource represents a long-running operation that is the result of a
+      # network API call.
+    "metadata": { # Service-specific metadata associated with the operation.  It typically
+        # contains progress information and common metadata such as create time.
+        # Some services might not provide such metadata.  Any method that returns a
+        # long-running operation should document the metadata type, if any.
+      "a_key": "", # Properties of the object. Contains field @type with type URL.
+    },
+    "error": { # The `Status` type defines a logical error model that is suitable for # The error result of the operation in case of failure or cancellation.
+        # different programming environments, including REST APIs and RPC APIs. It is
+        # used by [gRPC](https://github.com/grpc). The error model is designed to be:
+        #
+        # - Simple to use and understand for most users
+        # - Flexible enough to meet unexpected needs
+        #
+        # # Overview
+        #
+        # The `Status` message contains three pieces of data: error code, error
+        # message, and error details. The error code should be an enum value of
+        # google.rpc.Code, but it may accept additional error codes if needed.  The
+        # error message should be a developer-facing English message that helps
+        # developers *understand* and *resolve* the error. If a localized user-facing
+        # error message is needed, put the localized message in the error details or
+        # localize it in the client. The optional error details may contain arbitrary
+        # information about the error. There is a predefined set of error detail types
+        # in the package `google.rpc` that can be used for common error conditions.
+        #
+        # # Language mapping
+        #
+        # The `Status` message is the logical representation of the error model, but it
+        # is not necessarily the actual wire format. When the `Status` message is
+        # exposed in different client libraries and different wire protocols, it can be
+        # mapped differently. For example, it will likely be mapped to some exceptions
+        # in Java, but more likely mapped to some error codes in C.
+        #
+        # # Other uses
+        #
+        # The error model and the `Status` message can be used in a variety of
+        # environments, either with or without APIs, to provide a
+        # consistent developer experience across different environments.
+        #
+        # Example uses of this error model include:
+        #
+        # - Partial errors. If a service needs to return partial errors to the client,
+        #     it may embed the `Status` in the normal response to indicate the partial
+        #     errors.
+        #
+        # - Workflow errors. A typical workflow has multiple steps. Each step may
+        #     have a `Status` message for error reporting.
+        #
+        # - Batch operations. If a client uses batch request and batch response, the
+        #     `Status` message should be used directly inside batch response, one for
+        #     each error sub-response.
+        #
+        # - Asynchronous operations. If an API call embeds asynchronous operation
+        #     results in its response, the status of those operations should be
+        #     represented directly using the `Status` message.
+        #
+        # - Logging. If some API errors are stored in logs, the message `Status` could
+        #     be used directly after any stripping needed for security/privacy reasons.
+      "message": "A String", # A developer-facing error message, which should be in English. Any
+          # user-facing error message should be localized and sent in the
+          # google.rpc.Status.details field, or localized by the client.
+      "code": 42, # The status code, which should be an enum value of google.rpc.Code.
+      "details": [ # A list of messages that carry the error details.  There is a common set of
+          # message types for APIs to use.
+        {
+          "a_key": "", # Properties of the object. Contains field @type with type URL.
+        },
+      ],
+    },
+    "done": True or False, # If the value is `false`, it means the operation is still in progress.
+        # If `true`, the operation is completed, and either `error` or `response` is
+        # available.
+    "response": { # The normal response of the operation in case of success.  If the original
+        # method returns no data on success, such as `Delete`, the response is
+        # `google.protobuf.Empty`.  If the original method is standard
+        # `Get`/`Create`/`Update`, the response should be the resource.  For other
+        # methods, the response should have the type `XxxResponse`, where `Xxx`
+        # is the original method name.  For example, if the original method name
+        # is `TakeSnapshot()`, the inferred response type is
+        # `TakeSnapshotResponse`.
+      "a_key": "", # Properties of the object. Contains field @type with type URL.
+    },
+    "name": "A String", # The server-assigned name, which is only unique within the same service that
+        # originally returns it. If you use the default HTTP mapping, the
+        # `name` should be a resource name ending with `operations/{unique_id}`.
+  }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="get">get(name, x__xgafv=None)</code>
+  <pre>Gets the details of a specific instance.
+
+Args:
+  name: string, The instance resource name, in the format
+projects/{project_id}/locations/{location}/instances/{instance_id}. (required)
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # A Cloud Filestore instance.
+      "description": "A String", # Optional. A description of the instance (2048 characters or less).
+      "labels": { # Resource labels to represent user provided metadata.
+        "a_key": "A String",
+      },
+      "networks": [ # VPC networks to which the instance is connected.
+          # For this version, only a single network is supported.
+        { # Network configuration for the instance.
+          "reservedIpRange": "A String", # A /29 CIDR block in one of the
+              # [internal IP address
+              # ranges](https://www.arin.net/knowledge/address_filters.html) that
+              # identifies the range of IP addresses reserved for this instance. For
+              # example, 10.0.0.0/29 or 192.168.0.0/29. The range you specify can't overlap
+              # with either existing subnets or assigned IP address ranges for other Cloud
+              # Filestore instances in the selected VPC network.
+          "modes": [ # Internet protocol versions for which the instance has IP addresses
+              # assigned. For this version, only MODE_IPV4 is supported.
+            "A String",
+          ],
+          "ipAddresses": [ # Output only.
+              # IPv4 addresses in the format
+              # {octet 1}.{octet 2}.{octet 3}.{octet 4} or IPv6 addresses in the format
+              # {block 1}:{block 2}:{block 3}:{block 4}:{block 5}:{block 6}:{block
+              # 7}:{block 8}.
+            "A String",
+          ],
+          "network": "A String", # The name of the Google Compute Engine
+              # [VPC network](/compute/docs/networks-and-firewalls#networks) to which the
+              # instance is connected.
+        },
+      ],
+      "state": "A String", # Output only.
+          # The instance state.
+      "etag": "A String", # Server-specified ETag for the instance resource to prevent simultaneous
+          # updates from overwriting each other.
+      "fileShares": [ # File system shares on the instance.
+          # For this version, only a single file share is supported.
+        { # File share configuration for the instance.
+          "capacityGb": "A String", # File share capacity in gigabytes (GB).
+              # Cloud Filestore defines 1 GB as 1024^3 bytes.
+          "name": "A String", # The name of the file share (must be 16 characters or less).
+        },
+      ],
+      "tier": "A String", # The service tier of the instance.
+      "createTime": "A String", # Output only.
+          # The time when the instance was created.
+      "statusMessage": "A String", # Output only.
+          # Additional information about the instance state, if available.
+      "name": "A String", # Output only.
+          # The resource name of the instance, in the format
+          # projects/{project_id}/locations/{location_id}/instances/{instance_id}.
+    }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="list">list(parent, orderBy=None, pageSize=None, pageToken=None, x__xgafv=None, filter=None)</code>
+  <pre>Lists all instances in a project for either a specified location
+or for all locations.
+
+Args:
+  parent: string, The project and location for which to retrieve instance information,
+in the format projects/{project_id}/locations/{location}. In Cloud
+Filestore, locations map to GCP zones, for example **us-west1-b**. To
+retrieve instance information for all locations, use "-" for the {location}
+value. (required)
+  orderBy: string, Sort results. Supported values are "name", "name desc" or "" (unsorted).
+  pageSize: integer, The maximum number of items to return.
+  pageToken: string, The next_page_token value to use if there are additional
+results to retrieve for this list request.
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+  filter: string, List filter.
+
+Returns:
+  An object of the form:
+
+    { # ListInstancesResponse is the result of ListInstancesRequest.
+    "nextPageToken": "A String", # The token you can use to retrieve the next page of results. Not returned
+        # if there are no more results in the list.
+    "unreachable": [ # Locations that could not be reached.
+      "A String",
+    ],
+    "instances": [ # A list of instances in the project for the specified location.
+        #
+        # If the {location} value in the request is "-", the response contains a list
+        # of instances from all locations. If any location is unreachable, the
+        # response will only return instances in reachable locations and the
+        # "unreachable" field will be populated with a list of unreachable locations.
+      { # A Cloud Filestore instance.
+          "description": "A String", # Optional. A description of the instance (2048 characters or less).
+          "labels": { # Resource labels to represent user provided metadata.
+            "a_key": "A String",
+          },
+          "networks": [ # VPC networks to which the instance is connected.
+              # For this version, only a single network is supported.
+            { # Network configuration for the instance.
+              "reservedIpRange": "A String", # A /29 CIDR block in one of the
+                  # [internal IP address
+                  # ranges](https://www.arin.net/knowledge/address_filters.html) that
+                  # identifies the range of IP addresses reserved for this instance. For
+                  # example, 10.0.0.0/29 or 192.168.0.0/29. The range you specify can't overlap
+                  # with either existing subnets or assigned IP address ranges for other Cloud
+                  # Filestore instances in the selected VPC network.
+              "modes": [ # Internet protocol versions for which the instance has IP addresses
+                  # assigned. For this version, only MODE_IPV4 is supported.
+                "A String",
+              ],
+              "ipAddresses": [ # Output only.
+                  # IPv4 addresses in the format
+                  # {octet 1}.{octet 2}.{octet 3}.{octet 4} or IPv6 addresses in the format
+                  # {block 1}:{block 2}:{block 3}:{block 4}:{block 5}:{block 6}:{block
+                  # 7}:{block 8}.
+                "A String",
+              ],
+              "network": "A String", # The name of the Google Compute Engine
+                  # [VPC network](/compute/docs/networks-and-firewalls#networks) to which the
+                  # instance is connected.
+            },
+          ],
+          "state": "A String", # Output only.
+              # The instance state.
+          "etag": "A String", # Server-specified ETag for the instance resource to prevent simultaneous
+              # updates from overwriting each other.
+          "fileShares": [ # File system shares on the instance.
+              # For this version, only a single file share is supported.
+            { # File share configuration for the instance.
+              "capacityGb": "A String", # File share capacity in gigabytes (GB).
+                  # Cloud Filestore defines 1 GB as 1024^3 bytes.
+              "name": "A String", # The name of the file share (must be 16 characters or less).
+            },
+          ],
+          "tier": "A String", # The service tier of the instance.
+          "createTime": "A String", # Output only.
+              # The time when the instance was created.
+          "statusMessage": "A String", # Output only.
+              # Additional information about the instance state, if available.
+          "name": "A String", # Output only.
+              # The resource name of the instance, in the format
+              # projects/{project_id}/locations/{location_id}/instances/{instance_id}.
+        },
+    ],
+  }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="list_next">list_next(previous_request, previous_response)</code>
+  <pre>Retrieves the next page of results.
+
+Args:
+  previous_request: The request for the previous page. (required)
+  previous_response: The response from the request for the previous page. (required)
+
+Returns:
+  A request object that you can call 'execute()' on to request the next
+  page. Returns None if there are no more items in the collection.
+    </pre>
+</div>
+
+<div class="method">
+    <code class="details" id="patch">patch(name, body, updateMask=None, x__xgafv=None)</code>
+  <pre>Updates the settings of a specific instance.
+
+Args:
+  name: string, Output only.
+The resource name of the instance, in the format
+projects/{project_id}/locations/{location_id}/instances/{instance_id}. (required)
+  body: object, The request body. (required)
+    The object takes the form of:
+
+{ # A Cloud Filestore instance.
+    "description": "A String", # Optional. A description of the instance (2048 characters or less).
+    "labels": { # Resource labels to represent user provided metadata.
+      "a_key": "A String",
+    },
+    "networks": [ # VPC networks to which the instance is connected.
+        # For this version, only a single network is supported.
+      { # Network configuration for the instance.
+        "reservedIpRange": "A String", # A /29 CIDR block in one of the
+            # [internal IP address
+            # ranges](https://www.arin.net/knowledge/address_filters.html) that
+            # identifies the range of IP addresses reserved for this instance. For
+            # example, 10.0.0.0/29 or 192.168.0.0/29. The range you specify can't overlap
+            # with either existing subnets or assigned IP address ranges for other Cloud
+            # Filestore instances in the selected VPC network.
+        "modes": [ # Internet protocol versions for which the instance has IP addresses
+            # assigned. For this version, only MODE_IPV4 is supported.
+          "A String",
+        ],
+        "ipAddresses": [ # Output only.
+            # IPv4 addresses in the format
+            # {octet 1}.{octet 2}.{octet 3}.{octet 4} or IPv6 addresses in the format
+            # {block 1}:{block 2}:{block 3}:{block 4}:{block 5}:{block 6}:{block
+            # 7}:{block 8}.
+          "A String",
+        ],
+        "network": "A String", # The name of the Google Compute Engine
+            # [VPC network](/compute/docs/networks-and-firewalls#networks) to which the
+            # instance is connected.
+      },
+    ],
+    "state": "A String", # Output only.
+        # The instance state.
+    "etag": "A String", # Server-specified ETag for the instance resource to prevent simultaneous
+        # updates from overwriting each other.
+    "fileShares": [ # File system shares on the instance.
+        # For this version, only a single file share is supported.
+      { # File share configuration for the instance.
+        "capacityGb": "A String", # File share capacity in gigabytes (GB).
+            # Cloud Filestore defines 1 GB as 1024^3 bytes.
+        "name": "A String", # The name of the file share (must be 16 characters or less).
+      },
+    ],
+    "tier": "A String", # The service tier of the instance.
+    "createTime": "A String", # Output only.
+        # The time when the instance was created.
+    "statusMessage": "A String", # Output only.
+        # Additional information about the instance state, if available.
+    "name": "A String", # Output only.
+        # The resource name of the instance, in the format
+        # projects/{project_id}/locations/{location_id}/instances/{instance_id}.
+  }
+
+  updateMask: string, Mask of fields to update.  At least one path must be supplied in this
+field.  The elements of the repeated paths field may only include these
+fields:
+"description"
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # This resource represents a long-running operation that is the result of a
+      # network API call.
+    "metadata": { # Service-specific metadata associated with the operation.  It typically
+        # contains progress information and common metadata such as create time.
+        # Some services might not provide such metadata.  Any method that returns a
+        # long-running operation should document the metadata type, if any.
+      "a_key": "", # Properties of the object. Contains field @type with type URL.
+    },
+    "error": { # The `Status` type defines a logical error model that is suitable for # The error result of the operation in case of failure or cancellation.
+        # different programming environments, including REST APIs and RPC APIs. It is
+        # used by [gRPC](https://github.com/grpc). The error model is designed to be:
+        #
+        # - Simple to use and understand for most users
+        # - Flexible enough to meet unexpected needs
+        #
+        # # Overview
+        #
+        # The `Status` message contains three pieces of data: error code, error
+        # message, and error details. The error code should be an enum value of
+        # google.rpc.Code, but it may accept additional error codes if needed.  The
+        # error message should be a developer-facing English message that helps
+        # developers *understand* and *resolve* the error. If a localized user-facing
+        # error message is needed, put the localized message in the error details or
+        # localize it in the client. The optional error details may contain arbitrary
+        # information about the error. There is a predefined set of error detail types
+        # in the package `google.rpc` that can be used for common error conditions.
+        #
+        # # Language mapping
+        #
+        # The `Status` message is the logical representation of the error model, but it
+        # is not necessarily the actual wire format. When the `Status` message is
+        # exposed in different client libraries and different wire protocols, it can be
+        # mapped differently. For example, it will likely be mapped to some exceptions
+        # in Java, but more likely mapped to some error codes in C.
+        #
+        # # Other uses
+        #
+        # The error model and the `Status` message can be used in a variety of
+        # environments, either with or without APIs, to provide a
+        # consistent developer experience across different environments.
+        #
+        # Example uses of this error model include:
+        #
+        # - Partial errors. If a service needs to return partial errors to the client,
+        #     it may embed the `Status` in the normal response to indicate the partial
+        #     errors.
+        #
+        # - Workflow errors. A typical workflow has multiple steps. Each step may
+        #     have a `Status` message for error reporting.
+        #
+        # - Batch operations. If a client uses batch request and batch response, the
+        #     `Status` message should be used directly inside batch response, one for
+        #     each error sub-response.
+        #
+        # - Asynchronous operations. If an API call embeds asynchronous operation
+        #     results in its response, the status of those operations should be
+        #     represented directly using the `Status` message.
+        #
+        # - Logging. If some API errors are stored in logs, the message `Status` could
+        #     be used directly after any stripping needed for security/privacy reasons.
+      "message": "A String", # A developer-facing error message, which should be in English. Any
+          # user-facing error message should be localized and sent in the
+          # google.rpc.Status.details field, or localized by the client.
+      "code": 42, # The status code, which should be an enum value of google.rpc.Code.
+      "details": [ # A list of messages that carry the error details.  There is a common set of
+          # message types for APIs to use.
+        {
+          "a_key": "", # Properties of the object. Contains field @type with type URL.
+        },
+      ],
+    },
+    "done": True or False, # If the value is `false`, it means the operation is still in progress.
+        # If `true`, the operation is completed, and either `error` or `response` is
+        # available.
+    "response": { # The normal response of the operation in case of success.  If the original
+        # method returns no data on success, such as `Delete`, the response is
+        # `google.protobuf.Empty`.  If the original method is standard
+        # `Get`/`Create`/`Update`, the response should be the resource.  For other
+        # methods, the response should have the type `XxxResponse`, where `Xxx`
+        # is the original method name.  For example, if the original method name
+        # is `TakeSnapshot()`, the inferred response type is
+        # `TakeSnapshotResponse`.
+      "a_key": "", # Properties of the object. Contains field @type with type URL.
+    },
+    "name": "A String", # The server-assigned name, which is only unique within the same service that
+        # originally returns it. If you use the default HTTP mapping, the
+        # `name` should be a resource name ending with `operations/{unique_id}`.
+  }</pre>
+</div>
+
+</body></html>
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