Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
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+
+<h1><a href="containeranalysis_v1alpha1.html">Container Analysis API</a> . <a href="containeranalysis_v1alpha1.projects.html">projects</a> . <a href="containeranalysis_v1alpha1.projects.operations.html">operations</a></h1>
+<h2>Instance Methods</h2>
+<p class="toc_element">
+  <code><a href="#create">create(parent, body, x__xgafv=None)</a></code></p>
+<p class="firstline">Creates a new `Operation`.</p>
+<p class="toc_element">
+  <code><a href="#patch">patch(name, body, x__xgafv=None)</a></code></p>
+<p class="firstline">Updates an existing operation returns an error if operation</p>
+<h3>Method Details</h3>
+<div class="method">
+    <code class="details" id="create">create(parent, body, x__xgafv=None)</code>
+  <pre>Creates a new `Operation`.
+
+Args:
+  parent: string, The project Id that this operation should be created under. (required)
+  body: object, The request body. (required)
+    The object takes the form of:
+
+{ # Request for creating an operation
+    "operation": { # This resource represents a long-running operation that is the result of a # The operation to create.
+        # network API call.
+      "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.
+          },
+        ],
+      },
+      "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}`.
+      "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.
+      },
+    },
+    "operationId": "A String", # The ID to use for this operation.
+  }
+
+  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.
+    "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.
+        },
+      ],
+    },
+    "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}`.
+    "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.
+    },
+  }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="patch">patch(name, body, x__xgafv=None)</code>
+  <pre>Updates an existing operation returns an error if operation
+ does not exist. The only valid operations are to update mark the done bit
+change the result.
+
+Args:
+  name: string, The name of the Operation.
+Should be of the form "projects/{provider_id}/operations/{operation_id}". (required)
+  body: object, The request body. (required)
+    The object takes the form of:
+
+{ # Request for updating an existing operation
+    "operation": { # This resource represents a long-running operation that is the result of a # The operation to create.
+        # network API call.
+      "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.
+          },
+        ],
+      },
+      "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}`.
+      "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.
+      },
+    },
+    "updateMask": "A String", # The fields to update.
+  }
+
+  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.
+    "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.
+        },
+      ],
+    },
+    "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}`.
+    "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.
+    },
+  }</pre>
+</div>
+
+</body></html>
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