Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
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+
+<h1><a href="bigquerydatatransfer_v1.html">BigQuery Data Transfer API</a> . <a href="bigquerydatatransfer_v1.projects.html">projects</a> . <a href="bigquerydatatransfer_v1.projects.locations.html">locations</a> . <a href="bigquerydatatransfer_v1.projects.locations.transferConfigs.html">transferConfigs</a> . <a href="bigquerydatatransfer_v1.projects.locations.transferConfigs.runs.html">runs</a></h1>
+<h2>Instance Methods</h2>
+<p class="toc_element">
+  <code><a href="bigquerydatatransfer_v1.projects.locations.transferConfigs.runs.transferLogs.html">transferLogs()</a></code>
+</p>
+<p class="firstline">Returns the transferLogs Resource.</p>
+
+<p class="toc_element">
+  <code><a href="#delete">delete(name, x__xgafv=None)</a></code></p>
+<p class="firstline">Deletes the specified transfer run.</p>
+<p class="toc_element">
+  <code><a href="#get">get(name, x__xgafv=None)</a></code></p>
+<p class="firstline">Returns information about the particular transfer run.</p>
+<p class="toc_element">
+  <code><a href="#list">list(parent, pageSize=None, pageToken=None, runAttempt=None, states=None, x__xgafv=None)</a></code></p>
+<p class="firstline">Returns information about running and completed jobs.</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="delete">delete(name, x__xgafv=None)</code>
+  <pre>Deletes the specified transfer run.
+
+Args:
+  name: string, The field will contain name of the resource requested, for example:
+`projects/{project_id}/transferConfigs/{config_id}/runs/{run_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 generic empty message that you can re-use to avoid defining duplicated
+      # empty messages in your APIs. A typical example is to use it as the request
+      # or the response type of an API method. For instance:
+      #
+      #     service Foo {
+      #       rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty);
+      #     }
+      #
+      # The JSON representation for `Empty` is empty JSON object `{}`.
+  }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="get">get(name, x__xgafv=None)</code>
+  <pre>Returns information about the particular transfer run.
+
+Args:
+  name: string, The field will contain name of the resource requested, for example:
+`projects/{project_id}/transferConfigs/{config_id}/runs/{run_id}` (required)
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # Represents a data transfer run.
+    "updateTime": "A String", # Output only. Last time the data transfer run state was updated.
+    "destinationDatasetId": "A String", # Output only. The BigQuery target dataset id.
+    "name": "A String", # The resource name of the transfer run.
+        # Transfer run names have the form
+        # `projects/{project_id}/locations/{location}/transferConfigs/{config_id}/runs/{run_id}`.
+        # The name is ignored when creating a transfer run.
+    "schedule": "A String", # Output only. Describes the schedule of this transfer run if it was
+        # created as part of a regular schedule. For batch transfer runs that are
+        # scheduled manually, this is empty.
+        # NOTE: the system might choose to delay the schedule depending on the
+        # current load, so `schedule_time` doesn't always match this.
+    "scheduleTime": "A String", # Minimum time after which a transfer run can be started.
+    "userId": "A String", # Deprecated. Unique ID of the user on whose behalf transfer is done.
+    "state": "A String", # Data transfer run state. Ignored for input requests.
+    "errorStatus": { # The `Status` type defines a logical error model that is suitable for # Status of the transfer run.
+        # different programming environments, including REST APIs and RPC APIs. It is
+        # used by [gRPC](https://github.com/grpc). Each `Status` message contains
+        # three pieces of data: error code, error message, and error details.
+        #
+        # You can find out more about this error model and how to work with it in the
+        # [API Design Guide](https://cloud.google.com/apis/design/errors).
+      "message": "A String", # A developer-facing error message, which should be in English. Any
+          # user-facing error message should be localized and sent in the
+          # google.rpc.Status.details field, or localized by the client.
+      "code": 42, # The status code, which should be an enum value of google.rpc.Code.
+      "details": [ # A list of messages that carry the error details.  There is a common set of
+          # message types for APIs to use.
+        {
+          "a_key": "", # Properties of the object. Contains field @type with type URL.
+        },
+      ],
+    },
+    "params": { # Output only. Data transfer specific parameters.
+      "a_key": "", # Properties of the object.
+    },
+    "startTime": "A String", # Output only. Time when transfer run was started.
+        # Parameter ignored by server for input requests.
+    "dataSourceId": "A String", # Output only. Data source id.
+    "runTime": "A String", # For batch transfer runs, specifies the date and time that
+        # data should be ingested.
+    "endTime": "A String", # Output only. Time when transfer run ended.
+        # Parameter ignored by server for input requests.
+  }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="list">list(parent, pageSize=None, pageToken=None, runAttempt=None, states=None, x__xgafv=None)</code>
+  <pre>Returns information about running and completed jobs.
+
+Args:
+  parent: string, Name of transfer configuration for which transfer runs should be retrieved.
+Format of transfer configuration resource name is:
+`projects/{project_id}/transferConfigs/{config_id}`. (required)
+  pageSize: integer, Page size. The default page size is the maximum value of 1000 results.
+  pageToken: string, Pagination token, which can be used to request a specific page
+of `ListTransferRunsRequest` list results. For multiple-page
+results, `ListTransferRunsResponse` outputs
+a `next_page` token, which can be used as the
+`page_token` value to request the next page of list results.
+  runAttempt: string, Indicates how run attempts are to be pulled.
+  states: string, When specified, only transfer runs with requested states are returned. (repeated)
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # The returned list of pipelines in the project.
+    "nextPageToken": "A String", # Output only. The next-pagination token. For multiple-page list results,
+        # this token can be used as the
+        # `ListTransferRunsRequest.page_token`
+        # to request the next page of list results.
+    "transferRuns": [ # Output only. The stored pipeline transfer runs.
+      { # Represents a data transfer run.
+        "updateTime": "A String", # Output only. Last time the data transfer run state was updated.
+        "destinationDatasetId": "A String", # Output only. The BigQuery target dataset id.
+        "name": "A String", # The resource name of the transfer run.
+            # Transfer run names have the form
+            # `projects/{project_id}/locations/{location}/transferConfigs/{config_id}/runs/{run_id}`.
+            # The name is ignored when creating a transfer run.
+        "schedule": "A String", # Output only. Describes the schedule of this transfer run if it was
+            # created as part of a regular schedule. For batch transfer runs that are
+            # scheduled manually, this is empty.
+            # NOTE: the system might choose to delay the schedule depending on the
+            # current load, so `schedule_time` doesn't always match this.
+        "scheduleTime": "A String", # Minimum time after which a transfer run can be started.
+        "userId": "A String", # Deprecated. Unique ID of the user on whose behalf transfer is done.
+        "state": "A String", # Data transfer run state. Ignored for input requests.
+        "errorStatus": { # The `Status` type defines a logical error model that is suitable for # Status of the transfer run.
+            # different programming environments, including REST APIs and RPC APIs. It is
+            # used by [gRPC](https://github.com/grpc). Each `Status` message contains
+            # three pieces of data: error code, error message, and error details.
+            #
+            # You can find out more about this error model and how to work with it in the
+            # [API Design Guide](https://cloud.google.com/apis/design/errors).
+          "message": "A String", # A developer-facing error message, which should be in English. Any
+              # user-facing error message should be localized and sent in the
+              # google.rpc.Status.details field, or localized by the client.
+          "code": 42, # The status code, which should be an enum value of google.rpc.Code.
+          "details": [ # A list of messages that carry the error details.  There is a common set of
+              # message types for APIs to use.
+            {
+              "a_key": "", # Properties of the object. Contains field @type with type URL.
+            },
+          ],
+        },
+        "params": { # Output only. Data transfer specific parameters.
+          "a_key": "", # Properties of the object.
+        },
+        "startTime": "A String", # Output only. Time when transfer run was started.
+            # Parameter ignored by server for input requests.
+        "dataSourceId": "A String", # Output only. Data source id.
+        "runTime": "A String", # For batch transfer runs, specifies the date and time that
+            # data should be ingested.
+        "endTime": "A String", # Output only. Time when transfer run ended.
+            # Parameter ignored by server for input requests.
+      },
+    ],
+  }</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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