Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
diff --git a/docs/dyn/dataproc_v1.projects.regions.operations.html b/docs/dyn/dataproc_v1.projects.regions.operations.html
index a7d5a2a..31bc62f 100644
--- a/docs/dyn/dataproc_v1.projects.regions.operations.html
+++ b/docs/dyn/dataproc_v1.projects.regions.operations.html
@@ -72,7 +72,7 @@
 
 </style>
 
-<h1><a href="dataproc_v1.html">Google Cloud Dataproc API</a> . <a href="dataproc_v1.projects.html">projects</a> . <a href="dataproc_v1.projects.regions.html">regions</a> . <a href="dataproc_v1.projects.regions.operations.html">operations</a></h1>
+<h1><a href="dataproc_v1.html">Cloud Dataproc API</a> . <a href="dataproc_v1.projects.html">projects</a> . <a href="dataproc_v1.projects.regions.html">regions</a> . <a href="dataproc_v1.projects.regions.operations.html">operations</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
   <code><a href="#cancel">cancel(name, x__xgafv=None)</a></code></p>
@@ -84,11 +84,20 @@
   <code><a href="#get">get(name, x__xgafv=None)</a></code></p>
 <p class="firstline">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.</p>
 <p class="toc_element">
-  <code><a href="#list">list(name, pageSize=None, filter=None, pageToken=None, x__xgafv=None)</a></code></p>
+  <code><a href="#getIamPolicy">getIamPolicy(resource, body=None, x__xgafv=None)</a></code></p>
+<p class="firstline">Gets the access control policy for a resource. Returns an empty policy if the resource exists and does not have a policy set.</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. If the server doesn't support this method, it returns UNIMPLEMENTED.NOTE: the name binding allows API services to override the binding to use different resource name schemes, such as users/*/operations. To override the binding, API services can add a binding such as "/v1/{name=users/*}/operations" to their service configuration. For backwards compatibility, the default name includes the operations collection id, however overriding users must ensure the name binding is the parent resource, without the operations collection id.</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="#setIamPolicy">setIamPolicy(resource, body, x__xgafv=None)</a></code></p>
+<p class="firstline">Sets the access control policy on the specified resource. Replaces any existing policy.</p>
+<p class="toc_element">
+  <code><a href="#testIamPermissions">testIamPermissions(resource, body, x__xgafv=None)</a></code></p>
+<p class="firstline">Returns permissions that a caller has on the specified resource. If the resource does not exist, this will return an empty set of permissions, not a NOT_FOUND error.Note: This operation is designed to be used for building permission-aware UIs and command-line tools, not for authorization checking. This operation may "fail open" without warning.</p>
 <h3>Method Details</h3>
 <div class="method">
     <code class="details" id="cancel">cancel(name, x__xgafv=None)</code>
@@ -152,43 +161,114 @@
     "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 programming environments, including REST APIs and RPC APIs. It is used by gRPC (https://github.com/grpc). The error model is designed to be: # The error result of the operation in case of failure or cancellation.
-        # Simple to use and understand for most users
-        # Flexible enough to meet unexpected needsOverviewThe 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 mappingThe 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 usesThe 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.
+    "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}.
+    "error": { # The Status type defines a logical error model that is suitable for 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). # The error result of the operation in case of failure or cancellation.
       "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.
+      "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 have the format of operations/some/unique/name.
   }</pre>
 </div>
 
 <div class="method">
-    <code class="details" id="list">list(name, pageSize=None, filter=None, pageToken=None, x__xgafv=None)</code>
+    <code class="details" id="getIamPolicy">getIamPolicy(resource, body=None, x__xgafv=None)</code>
+  <pre>Gets the access control policy for a resource. Returns an empty policy if the resource exists and does not have a policy set.
+
+Args:
+  resource: string, REQUIRED: The resource for which the policy is being requested. See the operation documentation for the appropriate value for this field. (required)
+  body: object, The request body.
+    The object takes the form of:
+
+{ # Request message for GetIamPolicy method.
+  }
+
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # Defines an Identity and Access Management (IAM) policy. It is used to specify access control policies for Cloud Platform resources.A Policy consists of a list of bindings. A binding binds a list of members to a role, where the members can be user accounts, Google groups, Google domains, and service accounts. A role is a named list of permissions defined by IAM.JSON Example
+      # {
+      #   "bindings": [
+      #     {
+      #       "role": "roles/owner",
+      #       "members": [
+      #         "user:mike@example.com",
+      #         "group:admins@example.com",
+      #         "domain:google.com",
+      #         "serviceAccount:my-other-app@appspot.gserviceaccount.com"
+      #       ]
+      #     },
+      #     {
+      #       "role": "roles/viewer",
+      #       "members": ["user:sean@example.com"]
+      #     }
+      #   ]
+      # }
+      # YAML Example
+      # bindings:
+      # - members:
+      #   - user:mike@example.com
+      #   - group:admins@example.com
+      #   - domain:google.com
+      #   - serviceAccount:my-other-app@appspot.gserviceaccount.com
+      #   role: roles/owner
+      # - members:
+      #   - user:sean@example.com
+      #   role: roles/viewer
+      # For a description of IAM and its features, see the IAM developer's guide (https://cloud.google.com/iam/docs).
+    "bindings": [ # Associates a list of members to a role. bindings with no members will result in an error.
+      { # Associates members with a role.
+        "role": "A String", # Role that is assigned to members. For example, roles/viewer, roles/editor, or roles/owner.
+        "members": [ # Specifies the identities requesting access for a Cloud Platform resource. members can have the following values:
+            # allUsers: A special identifier that represents anyone who is  on the internet; with or without a Google account.
+            # allAuthenticatedUsers: A special identifier that represents anyone  who is authenticated with a Google account or a service account.
+            # user:{emailid}: An email address that represents a specific Google  account. For example, alice@gmail.com .
+            # serviceAccount:{emailid}: An email address that represents a service  account. For example, my-other-app@appspot.gserviceaccount.com.
+            # group:{emailid}: An email address that represents a Google group.  For example, admins@example.com.
+            # domain:{domain}: The G Suite domain (primary) that represents all the  users of that domain. For example, google.com or example.com.
+          "A String",
+        ],
+        "condition": { # Represents an expression text. Example: # The condition that is associated with this binding. NOTE: An unsatisfied condition will not allow user access via current binding. Different bindings, including their conditions, are examined independently.
+            # title: "User account presence"
+            # description: "Determines whether the request has a user account"
+            # expression: "size(request.user) > 0"
+          "location": "A String", # An optional string indicating the location of the expression for error reporting, e.g. a file name and a position in the file.
+          "expression": "A String", # Textual representation of an expression in Common Expression Language syntax.The application context of the containing message determines which well-known feature set of CEL is supported.
+          "description": "A String", # An optional description of the expression. This is a longer text which describes the expression, e.g. when hovered over it in a UI.
+          "title": "A String", # An optional title for the expression, i.e. a short string describing its purpose. This can be used e.g. in UIs which allow to enter the expression.
+        },
+      },
+    ],
+    "etag": "A String", # etag is used for optimistic concurrency control as a way to help prevent simultaneous updates of a policy from overwriting each other. It is strongly suggested that systems make use of the etag in the read-modify-write cycle to perform policy updates in order to avoid race conditions: An etag is returned in the response to getIamPolicy, and systems are expected to put that etag in the request to setIamPolicy to ensure that their change will be applied to the same version of the policy.If no etag is provided in the call to setIamPolicy, then the existing policy is overwritten blindly.
+    "version": 42, # Deprecated.
+  }</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. If the server doesn't support this method, it returns UNIMPLEMENTED.NOTE: the name binding allows API services to override the binding to use different resource name schemes, such as users/*/operations. To override the binding, API services can add a binding such as "/v1/{name=users/*}/operations" to their service configuration. For backwards compatibility, the default name includes the operations collection id, however overriding users must ensure the name binding is the parent resource, without the operations collection id.
 
 Args:
   name: string, The name of the operation's parent resource. (required)
-  pageSize: integer, The standard list page size.
-  filter: string, The standard list filter.
   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 standard list page size.
+  filter: string, The standard list filter.
 
 Returns:
   An object of the form:
@@ -200,27 +280,20 @@
         "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 programming environments, including REST APIs and RPC APIs. It is used by gRPC (https://github.com/grpc). The error model is designed to be: # The error result of the operation in case of failure or cancellation.
-            # Simple to use and understand for most users
-            # Flexible enough to meet unexpected needsOverviewThe 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 mappingThe 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 usesThe 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.
+        "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}.
+        "error": { # The Status type defines a logical error model that is suitable for 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). # The error result of the operation in case of failure or cancellation.
           "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.
+          "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 have the format of operations/some/unique/name.
       },
     ],
   }</pre>
@@ -240,4 +313,168 @@
     </pre>
 </div>
 
+<div class="method">
+    <code class="details" id="setIamPolicy">setIamPolicy(resource, body, x__xgafv=None)</code>
+  <pre>Sets the access control policy on the specified resource. Replaces any existing policy.
+
+Args:
+  resource: string, REQUIRED: The resource for which the policy is being specified. See the operation documentation for the appropriate value for this field. (required)
+  body: object, The request body. (required)
+    The object takes the form of:
+
+{ # Request message for SetIamPolicy method.
+    "policy": { # Defines an Identity and Access Management (IAM) policy. It is used to specify access control policies for Cloud Platform resources.A Policy consists of a list of bindings. A binding binds a list of members to a role, where the members can be user accounts, Google groups, Google domains, and service accounts. A role is a named list of permissions defined by IAM.JSON Example # REQUIRED: The complete policy to be applied to the resource. The size of the policy is limited to a few 10s of KB. An empty policy is a valid policy but certain Cloud Platform services (such as Projects) might reject them.
+        # {
+        #   "bindings": [
+        #     {
+        #       "role": "roles/owner",
+        #       "members": [
+        #         "user:mike@example.com",
+        #         "group:admins@example.com",
+        #         "domain:google.com",
+        #         "serviceAccount:my-other-app@appspot.gserviceaccount.com"
+        #       ]
+        #     },
+        #     {
+        #       "role": "roles/viewer",
+        #       "members": ["user:sean@example.com"]
+        #     }
+        #   ]
+        # }
+        # YAML Example
+        # bindings:
+        # - members:
+        #   - user:mike@example.com
+        #   - group:admins@example.com
+        #   - domain:google.com
+        #   - serviceAccount:my-other-app@appspot.gserviceaccount.com
+        #   role: roles/owner
+        # - members:
+        #   - user:sean@example.com
+        #   role: roles/viewer
+        # For a description of IAM and its features, see the IAM developer's guide (https://cloud.google.com/iam/docs).
+      "bindings": [ # Associates a list of members to a role. bindings with no members will result in an error.
+        { # Associates members with a role.
+          "role": "A String", # Role that is assigned to members. For example, roles/viewer, roles/editor, or roles/owner.
+          "members": [ # Specifies the identities requesting access for a Cloud Platform resource. members can have the following values:
+              # allUsers: A special identifier that represents anyone who is  on the internet; with or without a Google account.
+              # allAuthenticatedUsers: A special identifier that represents anyone  who is authenticated with a Google account or a service account.
+              # user:{emailid}: An email address that represents a specific Google  account. For example, alice@gmail.com .
+              # serviceAccount:{emailid}: An email address that represents a service  account. For example, my-other-app@appspot.gserviceaccount.com.
+              # group:{emailid}: An email address that represents a Google group.  For example, admins@example.com.
+              # domain:{domain}: The G Suite domain (primary) that represents all the  users of that domain. For example, google.com or example.com.
+            "A String",
+          ],
+          "condition": { # Represents an expression text. Example: # The condition that is associated with this binding. NOTE: An unsatisfied condition will not allow user access via current binding. Different bindings, including their conditions, are examined independently.
+              # title: "User account presence"
+              # description: "Determines whether the request has a user account"
+              # expression: "size(request.user) > 0"
+            "location": "A String", # An optional string indicating the location of the expression for error reporting, e.g. a file name and a position in the file.
+            "expression": "A String", # Textual representation of an expression in Common Expression Language syntax.The application context of the containing message determines which well-known feature set of CEL is supported.
+            "description": "A String", # An optional description of the expression. This is a longer text which describes the expression, e.g. when hovered over it in a UI.
+            "title": "A String", # An optional title for the expression, i.e. a short string describing its purpose. This can be used e.g. in UIs which allow to enter the expression.
+          },
+        },
+      ],
+      "etag": "A String", # etag is used for optimistic concurrency control as a way to help prevent simultaneous updates of a policy from overwriting each other. It is strongly suggested that systems make use of the etag in the read-modify-write cycle to perform policy updates in order to avoid race conditions: An etag is returned in the response to getIamPolicy, and systems are expected to put that etag in the request to setIamPolicy to ensure that their change will be applied to the same version of the policy.If no etag is provided in the call to setIamPolicy, then the existing policy is overwritten blindly.
+      "version": 42, # Deprecated.
+    },
+  }
+
+  x__xgafv: string, V1 error format.
+    Allowed values
+      1 - v1 error format
+      2 - v2 error format
+
+Returns:
+  An object of the form:
+
+    { # Defines an Identity and Access Management (IAM) policy. It is used to specify access control policies for Cloud Platform resources.A Policy consists of a list of bindings. A binding binds a list of members to a role, where the members can be user accounts, Google groups, Google domains, and service accounts. A role is a named list of permissions defined by IAM.JSON Example
+      # {
+      #   "bindings": [
+      #     {
+      #       "role": "roles/owner",
+      #       "members": [
+      #         "user:mike@example.com",
+      #         "group:admins@example.com",
+      #         "domain:google.com",
+      #         "serviceAccount:my-other-app@appspot.gserviceaccount.com"
+      #       ]
+      #     },
+      #     {
+      #       "role": "roles/viewer",
+      #       "members": ["user:sean@example.com"]
+      #     }
+      #   ]
+      # }
+      # YAML Example
+      # bindings:
+      # - members:
+      #   - user:mike@example.com
+      #   - group:admins@example.com
+      #   - domain:google.com
+      #   - serviceAccount:my-other-app@appspot.gserviceaccount.com
+      #   role: roles/owner
+      # - members:
+      #   - user:sean@example.com
+      #   role: roles/viewer
+      # For a description of IAM and its features, see the IAM developer's guide (https://cloud.google.com/iam/docs).
+    "bindings": [ # Associates a list of members to a role. bindings with no members will result in an error.
+      { # Associates members with a role.
+        "role": "A String", # Role that is assigned to members. For example, roles/viewer, roles/editor, or roles/owner.
+        "members": [ # Specifies the identities requesting access for a Cloud Platform resource. members can have the following values:
+            # allUsers: A special identifier that represents anyone who is  on the internet; with or without a Google account.
+            # allAuthenticatedUsers: A special identifier that represents anyone  who is authenticated with a Google account or a service account.
+            # user:{emailid}: An email address that represents a specific Google  account. For example, alice@gmail.com .
+            # serviceAccount:{emailid}: An email address that represents a service  account. For example, my-other-app@appspot.gserviceaccount.com.
+            # group:{emailid}: An email address that represents a Google group.  For example, admins@example.com.
+            # domain:{domain}: The G Suite domain (primary) that represents all the  users of that domain. For example, google.com or example.com.
+          "A String",
+        ],
+        "condition": { # Represents an expression text. Example: # The condition that is associated with this binding. NOTE: An unsatisfied condition will not allow user access via current binding. Different bindings, including their conditions, are examined independently.
+            # title: "User account presence"
+            # description: "Determines whether the request has a user account"
+            # expression: "size(request.user) > 0"
+          "location": "A String", # An optional string indicating the location of the expression for error reporting, e.g. a file name and a position in the file.
+          "expression": "A String", # Textual representation of an expression in Common Expression Language syntax.The application context of the containing message determines which well-known feature set of CEL is supported.
+          "description": "A String", # An optional description of the expression. This is a longer text which describes the expression, e.g. when hovered over it in a UI.
+          "title": "A String", # An optional title for the expression, i.e. a short string describing its purpose. This can be used e.g. in UIs which allow to enter the expression.
+        },
+      },
+    ],
+    "etag": "A String", # etag is used for optimistic concurrency control as a way to help prevent simultaneous updates of a policy from overwriting each other. It is strongly suggested that systems make use of the etag in the read-modify-write cycle to perform policy updates in order to avoid race conditions: An etag is returned in the response to getIamPolicy, and systems are expected to put that etag in the request to setIamPolicy to ensure that their change will be applied to the same version of the policy.If no etag is provided in the call to setIamPolicy, then the existing policy is overwritten blindly.
+    "version": 42, # Deprecated.
+  }</pre>
+</div>
+
+<div class="method">
+    <code class="details" id="testIamPermissions">testIamPermissions(resource, body, x__xgafv=None)</code>
+  <pre>Returns permissions that a caller has on the specified resource. If the resource does not exist, this will return an empty set of permissions, not a NOT_FOUND error.Note: This operation is designed to be used for building permission-aware UIs and command-line tools, not for authorization checking. This operation may "fail open" without warning.
+
+Args:
+  resource: string, REQUIRED: The resource for which the policy detail is being requested. See the operation documentation for the appropriate value for this field. (required)
+  body: object, The request body. (required)
+    The object takes the form of:
+
+{ # Request message for TestIamPermissions method.
+    "permissions": [ # The set of permissions to check for the resource. Permissions with wildcards (such as '*' or 'storage.*') are not allowed. For more information see IAM Overview (https://cloud.google.com/iam/docs/overview#permissions).
+      "A String",
+    ],
+  }
+
+  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 TestIamPermissions method.
+    "permissions": [ # A subset of TestPermissionsRequest.permissions that the caller is allowed.
+      "A String",
+    ],
+  }</pre>
+</div>
+
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