Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
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+
+<h1><a href="genomics_v2alpha1.html">Genomics API</a> . <a href="genomics_v2alpha1.projects.html">projects</a> . <a href="genomics_v2alpha1.projects.operations.html">operations</a></h1>
+<h2>Instance Methods</h2>
+<p class="toc_element">
+  <code><a href="#cancel">cancel(name, body=None, x__xgafv=None)</a></code></p>
+<p class="firstline">Starts asynchronous cancellation on a long-running operation.</p>
+<p class="toc_element">
+  <code><a href="#get">get(name, x__xgafv=None)</a></code></p>
+<p class="firstline">Gets the latest state of a long-running operation.</p>
+<p class="toc_element">
+  <code><a href="#list">list(name, pageToken=None, x__xgafv=None, pageSize=None, filter=None)</a></code></p>
+<p class="firstline">Lists operations that match the specified filter in the request.</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="cancel">cancel(name, body=None, x__xgafv=None)</code>
+  <pre>Starts asynchronous cancellation on a long-running operation.
+The server makes a best effort to cancel the operation, but success is not
+guaranteed. Clients may use Operations.GetOperation
+or Operations.ListOperations
+to check whether the cancellation succeeded or the operation completed
+despite cancellation.
+Authorization requires the following [Google IAM](https://cloud.google.com/iam) permission&#58;
+
+* `genomics.operations.cancel`
+
+Args:
+  name: string, The name of the operation resource to be cancelled. (required)
+  body: object, The request body.
+    The object takes the form of:
+
+{ # The request message for Operations.CancelOperation.
+  }
+
+  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>Gets the latest state of a long-running operation.
+Clients can use this method to poll the operation result at intervals as
+recommended by the API service.
+Authorization requires the following [Google IAM](https://cloud.google.com/iam) permission&#58;
+
+* `genomics.operations.get`
+
+Args:
+  name: string, The name of the operation resource. (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": { # An OperationMetadata or Metadata object. This will always be returned with the Operation.
+      "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": { # An Empty object.
+      "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. For example&#58; `operations/CJHU7Oi_ChDrveSpBRjfuL-qzoWAgEw`
+    "error": { # The `Status` type defines a logical error model that is suitable for # The error result of the operation in case of failure or cancellation.
+        # different programming environments, including REST APIs and RPC APIs. It is
+        # used by [gRPC](https://github.com/grpc). Each `Status` message contains
+        # three pieces of data: error code, error message, and error details.
+        #
+        # You can find out more about this error model and how to work with it in the
+        # [API Design Guide](https://cloud.google.com/apis/design/errors).
+      "message": "A String", # A developer-facing error message, which should be in English. Any
+          # user-facing error message should be localized and sent in the
+          # google.rpc.Status.details field, or localized by the client.
+      "code": 42, # The status code, which should be an enum value of google.rpc.Code.
+      "details": [ # A list of messages that carry the error details.  There is a common set of
+          # message types for APIs to use.
+        {
+          "a_key": "", # Properties of the object. Contains field @type with type URL.
+        },
+      ],
+    },
+  }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="list">list(name, pageToken=None, x__xgafv=None, pageSize=None, filter=None)</code>
+  <pre>Lists operations that match the specified filter in the request.
+Authorization requires the following [Google IAM](https://cloud.google.com/iam) permission&#58;
+
+* `genomics.operations.list`
+
+Args:
+  name: string, The name of the operation's parent resource. (required)
+  pageToken: string, The standard list page token.
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+  pageSize: integer, The maximum number of results to return. The maximum value is 256.
+  filter: string, A string for filtering Operations.
+In v2alpha1, the following filter fields are supported&#58;
+
+* createTime&#58; The time this job was created
+* events&#58; The set of event (names) that have occurred while running
+  the pipeline.  The &#58; operator can be used to determine if a
+  particular event has occurred.
+* error&#58; If the pipeline is running, this value is NULL.  Once the
+  pipeline finishes, the value is the standard Google error code.
+* labels.key or labels."key with space" where key is a label key.
+* done&#58; If the pipeline is running, this value is false. Once the
+  pipeline finishes, the value is true.
+
+In v1 and v1alpha2, the following filter fields are supported&#58;
+
+* projectId&#58; Required. Corresponds to
+  OperationMetadata.projectId.
+* createTime&#58; The time this job was created, in seconds from the
+  [epoch](http://en.wikipedia.org/wiki/Unix_time). Can use `>=` and/or `<=`
+  operators.
+* status&#58; Can be `RUNNING`, `SUCCESS`, `FAILURE`, or `CANCELED`. Only
+  one status may be specified.
+* labels.key where key is a label key.
+
+Examples&#58;
+
+* `projectId = my-project AND createTime >= 1432140000`
+* `projectId = my-project AND createTime >= 1432140000 AND createTime <= 1432150000 AND status = RUNNING`
+* `projectId = my-project AND labels.color = *`
+* `projectId = my-project AND labels.color = red`
+
+Returns:
+  An object of the form:
+
+    { # The response message for Operations.ListOperations.
+    "nextPageToken": "A String", # The standard List next-page token.
+    "operations": [ # A list of operations that matches the specified filter in the request.
+      { # This resource represents a long-running operation that is the result of a
+          # network API call.
+        "metadata": { # An OperationMetadata or Metadata object. This will always be returned with the Operation.
+          "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": { # An Empty object.
+          "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. For example&#58; `operations/CJHU7Oi_ChDrveSpBRjfuL-qzoWAgEw`
+        "error": { # The `Status` type defines a logical error model that is suitable for # The error result of the operation in case of failure or cancellation.
+            # different programming environments, including REST APIs and RPC APIs. It is
+            # used by [gRPC](https://github.com/grpc). Each `Status` message contains
+            # three pieces of data: error code, error message, and error details.
+            #
+            # You can find out more about this error model and how to work with it in the
+            # [API Design Guide](https://cloud.google.com/apis/design/errors).
+          "message": "A String", # A developer-facing error message, which should be in English. Any
+              # user-facing error message should be localized and sent in the
+              # google.rpc.Status.details field, or localized by the client.
+          "code": 42, # The status code, which should be an enum value of google.rpc.Code.
+          "details": [ # A list of messages that carry the error details.  There is a common set of
+              # message types for APIs to use.
+            {
+              "a_key": "", # Properties of the object. Contains field @type with type URL.
+            },
+          ],
+        },
+      },
+    ],
+  }</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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