chore: regens API reference docs (#889)

diff --git a/docs/dyn/cloudtasks_v2beta3.projects.locations.queues.html b/docs/dyn/cloudtasks_v2beta3.projects.locations.queues.html
index defd988..f0398de 100644
--- a/docs/dyn/cloudtasks_v2beta3.projects.locations.queues.html
+++ b/docs/dyn/cloudtasks_v2beta3.projects.locations.queues.html
@@ -80,7 +80,7 @@
 <p class="firstline">Returns the tasks Resource.</p>
 
 <p class="toc_element">
-  <code><a href="#create">create(parent, body, x__xgafv=None)</a></code></p>
+  <code><a href="#create">create(parent, body=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Creates a queue.</p>
 <p class="toc_element">
   <code><a href="#delete">delete(name, x__xgafv=None)</a></code></p>
@@ -92,13 +92,13 @@
   <code><a href="#getIamPolicy">getIamPolicy(resource, body=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Gets the access control policy for a Queue.</p>
 <p class="toc_element">
-  <code><a href="#list">list(parent, pageToken=None, x__xgafv=None, pageSize=None, filter=None)</a></code></p>
+  <code><a href="#list">list(parent, pageSize=None, pageToken=None, x__xgafv=None, filter=None)</a></code></p>
 <p class="firstline">Lists queues.</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>
+  <code><a href="#patch">patch(name, body=None, updateMask=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Updates a queue.</p>
 <p class="toc_element">
   <code><a href="#pause">pause(name, body=None, x__xgafv=None)</a></code></p>
@@ -110,14 +110,14 @@
   <code><a href="#resume">resume(name, body=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Resume a queue.</p>
 <p class="toc_element">
-  <code><a href="#setIamPolicy">setIamPolicy(resource, body, x__xgafv=None)</a></code></p>
+  <code><a href="#setIamPolicy">setIamPolicy(resource, body=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Sets the access control policy for a Queue. Replaces any existing</p>
 <p class="toc_element">
-  <code><a href="#testIamPermissions">testIamPermissions(resource, body, x__xgafv=None)</a></code></p>
+  <code><a href="#testIamPermissions">testIamPermissions(resource, body=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Returns permissions that a caller has on a Queue.</p>
 <h3>Method Details</h3>
 <div class="method">
-    <code class="details" id="create">create(parent, body, x__xgafv=None)</code>
+    <code class="details" id="create">create(parent, body=None, x__xgafv=None)</code>
   <pre>Creates a queue.
 
 Queues created with this method allow tasks to live for a maximum of 31
@@ -132,15 +132,13 @@
 this method.
 
 Args:
-  parent: string, Required.
-
-The location name in which the queue will be created.
+  parent: string, Required. The location name in which the queue will be created.
 For example: `projects/PROJECT_ID/locations/LOCATION_ID`
 
 The list of allowed locations can be obtained by calling Cloud
 Tasks' implementation of
 ListLocations. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # A queue is a container of related tasks. Queues are configured to manage
@@ -332,7 +330,7 @@
       "host": "A String", # Output only. The host that the task is sent to.
           #
           # The host is constructed from the domain name of the app associated with
-          # the queue's project ID (for example <app-id>.appspot.com), and the
+          # the queue's project ID (for example &lt;app-id&gt;.appspot.com), and the
           # service, version,
           # and instance. Tasks which were created using
           # the App Engine SDK might have a custom domain name.
@@ -409,7 +407,7 @@
         # A task's retry interval starts at
         # min_backoff, then doubles
         # `max_doublings` times, then increases linearly, and finally
-        # retries retries at intervals of
+        # retries at intervals of
         # max_backoff up to
         # max_attempts times.
         #
@@ -434,7 +432,7 @@
         #
         # Cloud Tasks will attempt the task `max_attempts` times (that is, if the
         # first attempt fails, then there will be `max_attempts - 1` retries). Must
-        # be >= -1.
+        # be &gt;= -1.
         #
         # If unspecified when the queue is created, Cloud Tasks will pick the
         # default.
@@ -674,7 +672,7 @@
         "host": "A String", # Output only. The host that the task is sent to.
             #
             # The host is constructed from the domain name of the app associated with
-            # the queue's project ID (for example <app-id>.appspot.com), and the
+            # the queue's project ID (for example &lt;app-id&gt;.appspot.com), and the
             # service, version,
             # and instance. Tasks which were created using
             # the App Engine SDK might have a custom domain name.
@@ -751,7 +749,7 @@
           # A task's retry interval starts at
           # min_backoff, then doubles
           # `max_doublings` times, then increases linearly, and finally
-          # retries retries at intervals of
+          # retries at intervals of
           # max_backoff up to
           # max_attempts times.
           #
@@ -776,7 +774,7 @@
           #
           # Cloud Tasks will attempt the task `max_attempts` times (that is, if the
           # first attempt fails, then there will be `max_attempts - 1` retries). Must
-          # be >= -1.
+          # be &gt;= -1.
           #
           # If unspecified when the queue is created, Cloud Tasks will pick the
           # default.
@@ -837,9 +835,7 @@
 this method.
 
 Args:
-  name: string, Required.
-
-The queue name. For example:
+  name: string, Required. The queue name. For example:
 `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID` (required)
   x__xgafv: string, V1 error format.
     Allowed values
@@ -866,9 +862,7 @@
   <pre>Gets a queue.
 
 Args:
-  name: string, Required.
-
-The resource name of the queue. For example:
+  name: string, Required. The resource name of the queue. For example:
 `projects/PROJECT_ID/locations/LOCATION_ID/queues/QUEUE_ID` (required)
   x__xgafv: string, V1 error format.
     Allowed values
@@ -1067,7 +1061,7 @@
         "host": "A String", # Output only. The host that the task is sent to.
             #
             # The host is constructed from the domain name of the app associated with
-            # the queue's project ID (for example <app-id>.appspot.com), and the
+            # the queue's project ID (for example &lt;app-id&gt;.appspot.com), and the
             # service, version,
             # and instance. Tasks which were created using
             # the App Engine SDK might have a custom domain name.
@@ -1144,7 +1138,7 @@
           # A task's retry interval starts at
           # min_backoff, then doubles
           # `max_doublings` times, then increases linearly, and finally
-          # retries retries at intervals of
+          # retries at intervals of
           # max_backoff up to
           # max_attempts times.
           #
@@ -1169,7 +1163,7 @@
           #
           # Cloud Tasks will attempt the task `max_attempts` times (that is, if the
           # first attempt fails, then there will be `max_attempts - 1` retries). Must
-          # be >= -1.
+          # be &gt;= -1.
           #
           # If unspecified when the queue is created, Cloud Tasks will pick the
           # default.
@@ -1232,6 +1226,17 @@
     The object takes the form of:
 
 { # Request message for `GetIamPolicy` method.
+    "options": { # Encapsulates settings provided to GetIamPolicy. # OPTIONAL: A `GetPolicyOptions` object for specifying options to
+        # `GetIamPolicy`.
+      "requestedPolicyVersion": 42, # Optional. The policy format version to be returned.
+          #
+          # Valid values are 0, 1, and 3. Requests specifying an invalid value will be
+          # rejected.
+          #
+          # Requests for policies with any conditional bindings must specify version 3.
+          # Policies without any conditional bindings may specify any valid value or
+          # leave the field unset.
+    },
   }
 
   x__xgafv: string, V1 error format.
@@ -1242,74 +1247,116 @@
 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.
+    { # An Identity and Access Management (IAM) policy, which specifies access
+      # controls for Google Cloud 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.
+      # A `Policy` is a collection of `bindings`. A `binding` binds one or more
+      # `members` to a single `role`. Members can be user accounts, service accounts,
+      # Google groups, and domains (such as G Suite). A `role` is a named list of
+      # permissions; each `role` can be an IAM predefined role or a user-created
+      # custom role.
       #
-      # **JSON Example**
+      # Optionally, a `binding` can specify a `condition`, which is a logical
+      # expression that allows access to a resource only if the expression evaluates
+      # to `true`. A condition can add constraints based on attributes of the
+      # request, the resource, or both.
+      #
+      # **JSON example:**
       #
       #     {
       #       "bindings": [
       #         {
-      #           "role": "roles/owner",
+      #           "role": "roles/resourcemanager.organizationAdmin",
       #           "members": [
       #             "user:mike@example.com",
       #             "group:admins@example.com",
       #             "domain:google.com",
-      #             "serviceAccount:my-other-app@appspot.gserviceaccount.com"
+      #             "serviceAccount:my-project-id@appspot.gserviceaccount.com"
       #           ]
       #         },
       #         {
-      #           "role": "roles/viewer",
-      #           "members": ["user:sean@example.com"]
+      #           "role": "roles/resourcemanager.organizationViewer",
+      #           "members": ["user:eve@example.com"],
+      #           "condition": {
+      #             "title": "expirable access",
+      #             "description": "Does not grant access after Sep 2020",
+      #             "expression": "request.time &lt; timestamp('2020-10-01T00:00:00.000Z')",
+      #           }
       #         }
-      #       ]
+      #       ],
+      #       "etag": "BwWWja0YfJA=",
+      #       "version": 3
       #     }
       #
-      # **YAML Example**
+      # **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
+      #       - serviceAccount:my-project-id@appspot.gserviceaccount.com
+      #       role: roles/resourcemanager.organizationAdmin
       #     - members:
-      #       - user:sean@example.com
-      #       role: roles/viewer
-      #
+      #       - user:eve@example.com
+      #       role: roles/resourcemanager.organizationViewer
+      #       condition:
+      #         title: expirable access
+      #         description: Does not grant access after Sep 2020
+      #         expression: request.time &lt; timestamp('2020-10-01T00:00:00.000Z')
+      #     - etag: BwWWja0YfJA=
+      #     - version: 3
       #
       # 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.
+      # [IAM documentation](https://cloud.google.com/iam/docs/).
+    "bindings": [ # Associates a list of `members` to a `role`. Optionally, may specify a
+        # `condition` that determines how and when the `bindings` are applied. Each
+        # of the `bindings` must contain at least one member.
       { # Associates `members` with a `role`.
         "role": "A String", # Role that is assigned to `members`.
             # For example, `roles/viewer`, `roles/editor`, or `roles/owner`.
-        "condition": { # Represents an expression text. Example: # The condition that is associated with this binding.
+        "condition": { # Represents a textual expression in the Common Expression Language (CEL) # 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.
+            # syntax. CEL is a C-like expression language. The syntax and semantics of CEL
+            # are documented at https://github.com/google/cel-spec.
             #
-            #     title: "User account presence"
-            #     description: "Determines whether the request has a user account"
-            #     expression: "size(request.user) > 0"
-          "description": "A String", # An optional description of the expression. This is a longer text which
+            # Example (Comparison):
+            #
+            #     title: "Summary size limit"
+            #     description: "Determines if a summary is less than 100 chars"
+            #     expression: "document.summary.size() &lt; 100"
+            #
+            # Example (Equality):
+            #
+            #     title: "Requestor is owner"
+            #     description: "Determines if requestor is the document owner"
+            #     expression: "document.owner == request.auth.claims.email"
+            #
+            # Example (Logic):
+            #
+            #     title: "Public documents"
+            #     description: "Determine whether the document should be publicly visible"
+            #     expression: "document.type != 'private' &amp;&amp; document.type != 'internal'"
+            #
+            # Example (Data Manipulation):
+            #
+            #     title: "Notification string"
+            #     description: "Create a notification string with a timestamp."
+            #     expression: "'New message received at ' + string(document.create_time)"
+            #
+            # The exact variables and functions that may be referenced within an expression
+            # are determined by the service that evaluates it. See the service
+            # documentation for additional information.
+          "description": "A String", # Optional. Description of the expression. This is a longer text which
               # describes the expression, e.g. when hovered over it in a UI.
-          "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.
-          "location": "A String", # An optional string indicating the location of the expression for error
+          "expression": "A String", # Textual representation of an expression in Common Expression Language
+              # syntax.
+          "location": "A String", # Optional. String indicating the location of the expression for error
               # reporting, e.g. a file name and a position in the file.
-          "title": "A String", # An optional title for the expression, i.e. a short string describing
+          "title": "A String", # 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.
         },
@@ -1323,7 +1370,7 @@
             #    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` .
+            #    account. For example, `alice@example.com` .
             #
             #
             # * `serviceAccount:{emailid}`: An email address that represents a service
@@ -1332,6 +1379,26 @@
             # * `group:{emailid}`: An email address that represents a Google group.
             #    For example, `admins@example.com`.
             #
+            # * `deleted:user:{emailid}?uid={uniqueid}`: An email address (plus unique
+            #    identifier) representing a user that has been recently deleted. For
+            #    example, `alice@example.com?uid=123456789012345678901`. If the user is
+            #    recovered, this value reverts to `user:{emailid}` and the recovered user
+            #    retains the role in the binding.
+            #
+            # * `deleted:serviceAccount:{emailid}?uid={uniqueid}`: An email address (plus
+            #    unique identifier) representing a service account that has been recently
+            #    deleted. For example,
+            #    `my-other-app@appspot.gserviceaccount.com?uid=123456789012345678901`.
+            #    If the service account is undeleted, this value reverts to
+            #    `serviceAccount:{emailid}` and the undeleted service account retains the
+            #    role in the binding.
+            #
+            # * `deleted:group:{emailid}?uid={uniqueid}`: An email address (plus unique
+            #    identifier) representing a Google group that has been recently
+            #    deleted. For example, `admins@example.com?uid=123456789012345678901`. If
+            #    the group is recovered, this value reverts to `group:{emailid}` and the
+            #    recovered group retains the role in the binding.
+            #
             #
             # * `domain:{domain}`: The G Suite domain (primary) that represents all the
             #    users of that domain. For example, `google.com` or `example.com`.
@@ -1348,23 +1415,50 @@
         # 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.
+        # **Important:** If you use IAM Conditions, you must include the `etag` field
+        # whenever you call `setIamPolicy`. If you omit this field, then IAM allows
+        # you to overwrite a version `3` policy with a version `1` policy, and all of
+        # the conditions in the version `3` policy are lost.
+    "version": 42, # Specifies the format of the policy.
+        #
+        # Valid values are `0`, `1`, and `3`. Requests that specify an invalid value
+        # are rejected.
+        #
+        # Any operation that affects conditional role bindings must specify version
+        # `3`. This requirement applies to the following operations:
+        #
+        # * Getting a policy that includes a conditional role binding
+        # * Adding a conditional role binding to a policy
+        # * Changing a conditional role binding in a policy
+        # * Removing any role binding, with or without a condition, from a policy
+        #   that includes conditions
+        #
+        # **Important:** If you use IAM Conditions, you must include the `etag` field
+        # whenever you call `setIamPolicy`. If you omit this field, then IAM allows
+        # you to overwrite a version `3` policy with a version `1` policy, and all of
+        # the conditions in the version `3` policy are lost.
+        #
+        # If a policy does not include any conditions, operations on that policy may
+        # specify any valid version or leave the field unset.
   }</pre>
 </div>
 
 <div class="method">
-    <code class="details" id="list">list(parent, pageToken=None, x__xgafv=None, pageSize=None, filter=None)</code>
+    <code class="details" id="list">list(parent, pageSize=None, pageToken=None, x__xgafv=None, filter=None)</code>
   <pre>Lists queues.
 
 Queues are returned in lexicographical order.
 
 Args:
-  parent: string, Required.
-
-The location name.
+  parent: string, Required. The location name.
 For example: `projects/PROJECT_ID/locations/LOCATION_ID` (required)
+  pageSize: integer, Requested page size.
+
+The maximum page size is 9800. If unspecified, the page size will
+be the maximum. Fewer queues than requested might be returned,
+even if more queues exist; use the
+next_page_token in the
+response to determine if more queues exist.
   pageToken: string, A token identifying the page of results to return.
 
 To request the first page results, page_token must be empty. To
@@ -1377,16 +1471,9 @@
     Allowed values
       1 - v1 error format
       2 - v2 error format
-  pageSize: integer, Requested page size.
-
-The maximum page size is 9800. If unspecified, the page size will
-be the maximum. Fewer queues than requested might be returned,
-even if more queues exist; use the
-next_page_token in the
-response to determine if more queues exist.
   filter: string, `filter` can be used to specify a subset of queues. Any Queue
 field can be used as a filter and several operators as supported.
-For example: `<=, <, >=, >, !=, =, :`. The filter syntax is the same as
+For example: `&lt;=, &lt;, &gt;=, &gt;, !=, =, :`. The filter syntax is the same as
 described in
 [Stackdriver's Advanced Logs
 Filters](https://cloud.google.com/logging/docs/view/advanced_filters).
@@ -1599,7 +1686,7 @@
             "host": "A String", # Output only. The host that the task is sent to.
                 #
                 # The host is constructed from the domain name of the app associated with
-                # the queue's project ID (for example <app-id>.appspot.com), and the
+                # the queue's project ID (for example &lt;app-id&gt;.appspot.com), and the
                 # service, version,
                 # and instance. Tasks which were created using
                 # the App Engine SDK might have a custom domain name.
@@ -1676,7 +1763,7 @@
               # A task's retry interval starts at
               # min_backoff, then doubles
               # `max_doublings` times, then increases linearly, and finally
-              # retries retries at intervals of
+              # retries at intervals of
               # max_backoff up to
               # max_attempts times.
               #
@@ -1701,7 +1788,7 @@
               #
               # Cloud Tasks will attempt the task `max_attempts` times (that is, if the
               # first attempt fails, then there will be `max_attempts - 1` retries). Must
-              # be >= -1.
+              # be &gt;= -1.
               #
               # If unspecified when the queue is created, Cloud Tasks will pick the
               # default.
@@ -1762,7 +1849,7 @@
 </div>
 
 <div class="method">
-    <code class="details" id="patch">patch(name, body, updateMask=None, x__xgafv=None)</code>
+    <code class="details" id="patch">patch(name, body=None, updateMask=None, x__xgafv=None)</code>
   <pre>Updates a queue.
 
 This method creates the queue if it does not exist and updates
@@ -1799,7 +1886,7 @@
    For more information, see https://cloud.google.com/about/locations/.
 * `QUEUE_ID` can contain letters ([A-Za-z]), numbers ([0-9]), or
   hyphens (-). The maximum length is 100 characters. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # A queue is a container of related tasks. Queues are configured to manage
@@ -1991,7 +2078,7 @@
       "host": "A String", # Output only. The host that the task is sent to.
           #
           # The host is constructed from the domain name of the app associated with
-          # the queue's project ID (for example <app-id>.appspot.com), and the
+          # the queue's project ID (for example &lt;app-id&gt;.appspot.com), and the
           # service, version,
           # and instance. Tasks which were created using
           # the App Engine SDK might have a custom domain name.
@@ -2068,7 +2155,7 @@
         # A task's retry interval starts at
         # min_backoff, then doubles
         # `max_doublings` times, then increases linearly, and finally
-        # retries retries at intervals of
+        # retries at intervals of
         # max_backoff up to
         # max_attempts times.
         #
@@ -2093,7 +2180,7 @@
         #
         # Cloud Tasks will attempt the task `max_attempts` times (that is, if the
         # first attempt fails, then there will be `max_attempts - 1` retries). Must
-        # be >= -1.
+        # be &gt;= -1.
         #
         # If unspecified when the queue is created, Cloud Tasks will pick the
         # default.
@@ -2336,7 +2423,7 @@
         "host": "A String", # Output only. The host that the task is sent to.
             #
             # The host is constructed from the domain name of the app associated with
-            # the queue's project ID (for example <app-id>.appspot.com), and the
+            # the queue's project ID (for example &lt;app-id&gt;.appspot.com), and the
             # service, version,
             # and instance. Tasks which were created using
             # the App Engine SDK might have a custom domain name.
@@ -2413,7 +2500,7 @@
           # A task's retry interval starts at
           # min_backoff, then doubles
           # `max_doublings` times, then increases linearly, and finally
-          # retries retries at intervals of
+          # retries at intervals of
           # max_backoff up to
           # max_attempts times.
           #
@@ -2438,7 +2525,7 @@
           #
           # Cloud Tasks will attempt the task `max_attempts` times (that is, if the
           # first attempt fails, then there will be `max_attempts - 1` retries). Must
-          # be >= -1.
+          # be &gt;= -1.
           #
           # If unspecified when the queue is created, Cloud Tasks will pick the
           # default.
@@ -2493,9 +2580,7 @@
 state is PAUSED.
 
 Args:
-  name: string, Required.
-
-The queue name. For example:
+  name: string, Required. The queue name. For example:
 `projects/PROJECT_ID/location/LOCATION_ID/queues/QUEUE_ID` (required)
   body: object, The request body.
     The object takes the form of:
@@ -2700,7 +2785,7 @@
         "host": "A String", # Output only. The host that the task is sent to.
             #
             # The host is constructed from the domain name of the app associated with
-            # the queue's project ID (for example <app-id>.appspot.com), and the
+            # the queue's project ID (for example &lt;app-id&gt;.appspot.com), and the
             # service, version,
             # and instance. Tasks which were created using
             # the App Engine SDK might have a custom domain name.
@@ -2777,7 +2862,7 @@
           # A task's retry interval starts at
           # min_backoff, then doubles
           # `max_doublings` times, then increases linearly, and finally
-          # retries retries at intervals of
+          # retries at intervals of
           # max_backoff up to
           # max_attempts times.
           #
@@ -2802,7 +2887,7 @@
           #
           # Cloud Tasks will attempt the task `max_attempts` times (that is, if the
           # first attempt fails, then there will be `max_attempts - 1` retries). Must
-          # be >= -1.
+          # be &gt;= -1.
           #
           # If unspecified when the queue is created, Cloud Tasks will pick the
           # default.
@@ -2856,9 +2941,7 @@
 might be dispatched before the purge takes effect. A purge is irreversible.
 
 Args:
-  name: string, Required.
-
-The queue name. For example:
+  name: string, Required. The queue name. For example:
 `projects/PROJECT_ID/location/LOCATION_ID/queues/QUEUE_ID` (required)
   body: object, The request body.
     The object takes the form of:
@@ -3063,7 +3146,7 @@
         "host": "A String", # Output only. The host that the task is sent to.
             #
             # The host is constructed from the domain name of the app associated with
-            # the queue's project ID (for example <app-id>.appspot.com), and the
+            # the queue's project ID (for example &lt;app-id&gt;.appspot.com), and the
             # service, version,
             # and instance. Tasks which were created using
             # the App Engine SDK might have a custom domain name.
@@ -3140,7 +3223,7 @@
           # A task's retry interval starts at
           # min_backoff, then doubles
           # `max_doublings` times, then increases linearly, and finally
-          # retries retries at intervals of
+          # retries at intervals of
           # max_backoff up to
           # max_attempts times.
           #
@@ -3165,7 +3248,7 @@
           #
           # Cloud Tasks will attempt the task `max_attempts` times (that is, if the
           # first attempt fails, then there will be `max_attempts - 1` retries). Must
-          # be >= -1.
+          # be &gt;= -1.
           #
           # If unspecified when the queue is created, Cloud Tasks will pick the
           # default.
@@ -3226,9 +3309,7 @@
 Risks](https://cloud.google.com/tasks/docs/manage-cloud-task-scaling).
 
 Args:
-  name: string, Required.
-
-The queue name. For example:
+  name: string, Required. The queue name. For example:
 `projects/PROJECT_ID/location/LOCATION_ID/queues/QUEUE_ID` (required)
   body: object, The request body.
     The object takes the form of:
@@ -3433,7 +3514,7 @@
         "host": "A String", # Output only. The host that the task is sent to.
             #
             # The host is constructed from the domain name of the app associated with
-            # the queue's project ID (for example <app-id>.appspot.com), and the
+            # the queue's project ID (for example &lt;app-id&gt;.appspot.com), and the
             # service, version,
             # and instance. Tasks which were created using
             # the App Engine SDK might have a custom domain name.
@@ -3510,7 +3591,7 @@
           # A task's retry interval starts at
           # min_backoff, then doubles
           # `max_doublings` times, then increases linearly, and finally
-          # retries retries at intervals of
+          # retries at intervals of
           # max_backoff up to
           # max_attempts times.
           #
@@ -3535,7 +3616,7 @@
           #
           # Cloud Tasks will attempt the task `max_attempts` times (that is, if the
           # first attempt fails, then there will be `max_attempts - 1` retries). Must
-          # be >= -1.
+          # be &gt;= -1.
           #
           # If unspecified when the queue is created, Cloud Tasks will pick the
           # default.
@@ -3580,7 +3661,7 @@
 </div>
 
 <div class="method">
-    <code class="details" id="setIamPolicy">setIamPolicy(resource, body, x__xgafv=None)</code>
+    <code class="details" id="setIamPolicy">setIamPolicy(resource, body=None, x__xgafv=None)</code>
   <pre>Sets the access control policy for a Queue. Replaces any existing
 policy.
 
@@ -3596,81 +3677,123 @@
 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)
+  body: object, The request body.
     The object takes the form of:
 
 { # Request message for `SetIamPolicy` method.
-    "policy": { # Defines an Identity and Access Management (IAM) policy. It is used to # REQUIRED: The complete policy to be applied to the `resource`. The size of
+    "policy": { # An Identity and Access Management (IAM) policy, which specifies access # 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.
-        # specify access control policies for Cloud Platform resources.
+        # controls for Google Cloud 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.
+        # A `Policy` is a collection of `bindings`. A `binding` binds one or more
+        # `members` to a single `role`. Members can be user accounts, service accounts,
+        # Google groups, and domains (such as G Suite). A `role` is a named list of
+        # permissions; each `role` can be an IAM predefined role or a user-created
+        # custom role.
         #
-        # **JSON Example**
+        # Optionally, a `binding` can specify a `condition`, which is a logical
+        # expression that allows access to a resource only if the expression evaluates
+        # to `true`. A condition can add constraints based on attributes of the
+        # request, the resource, or both.
+        #
+        # **JSON example:**
         #
         #     {
         #       "bindings": [
         #         {
-        #           "role": "roles/owner",
+        #           "role": "roles/resourcemanager.organizationAdmin",
         #           "members": [
         #             "user:mike@example.com",
         #             "group:admins@example.com",
         #             "domain:google.com",
-        #             "serviceAccount:my-other-app@appspot.gserviceaccount.com"
+        #             "serviceAccount:my-project-id@appspot.gserviceaccount.com"
         #           ]
         #         },
         #         {
-        #           "role": "roles/viewer",
-        #           "members": ["user:sean@example.com"]
+        #           "role": "roles/resourcemanager.organizationViewer",
+        #           "members": ["user:eve@example.com"],
+        #           "condition": {
+        #             "title": "expirable access",
+        #             "description": "Does not grant access after Sep 2020",
+        #             "expression": "request.time &lt; timestamp('2020-10-01T00:00:00.000Z')",
+        #           }
         #         }
-        #       ]
+        #       ],
+        #       "etag": "BwWWja0YfJA=",
+        #       "version": 3
         #     }
         #
-        # **YAML Example**
+        # **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
+        #       - serviceAccount:my-project-id@appspot.gserviceaccount.com
+        #       role: roles/resourcemanager.organizationAdmin
         #     - members:
-        #       - user:sean@example.com
-        #       role: roles/viewer
-        #
+        #       - user:eve@example.com
+        #       role: roles/resourcemanager.organizationViewer
+        #       condition:
+        #         title: expirable access
+        #         description: Does not grant access after Sep 2020
+        #         expression: request.time &lt; timestamp('2020-10-01T00:00:00.000Z')
+        #     - etag: BwWWja0YfJA=
+        #     - version: 3
         #
         # 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.
+        # [IAM documentation](https://cloud.google.com/iam/docs/).
+      "bindings": [ # Associates a list of `members` to a `role`. Optionally, may specify a
+          # `condition` that determines how and when the `bindings` are applied. Each
+          # of the `bindings` must contain at least one member.
         { # Associates `members` with a `role`.
           "role": "A String", # Role that is assigned to `members`.
               # For example, `roles/viewer`, `roles/editor`, or `roles/owner`.
-          "condition": { # Represents an expression text. Example: # The condition that is associated with this binding.
+          "condition": { # Represents a textual expression in the Common Expression Language (CEL) # 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.
+              # syntax. CEL is a C-like expression language. The syntax and semantics of CEL
+              # are documented at https://github.com/google/cel-spec.
               #
-              #     title: "User account presence"
-              #     description: "Determines whether the request has a user account"
-              #     expression: "size(request.user) > 0"
-            "description": "A String", # An optional description of the expression. This is a longer text which
+              # Example (Comparison):
+              #
+              #     title: "Summary size limit"
+              #     description: "Determines if a summary is less than 100 chars"
+              #     expression: "document.summary.size() &lt; 100"
+              #
+              # Example (Equality):
+              #
+              #     title: "Requestor is owner"
+              #     description: "Determines if requestor is the document owner"
+              #     expression: "document.owner == request.auth.claims.email"
+              #
+              # Example (Logic):
+              #
+              #     title: "Public documents"
+              #     description: "Determine whether the document should be publicly visible"
+              #     expression: "document.type != 'private' &amp;&amp; document.type != 'internal'"
+              #
+              # Example (Data Manipulation):
+              #
+              #     title: "Notification string"
+              #     description: "Create a notification string with a timestamp."
+              #     expression: "'New message received at ' + string(document.create_time)"
+              #
+              # The exact variables and functions that may be referenced within an expression
+              # are determined by the service that evaluates it. See the service
+              # documentation for additional information.
+            "description": "A String", # Optional. Description of the expression. This is a longer text which
                 # describes the expression, e.g. when hovered over it in a UI.
-            "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.
-            "location": "A String", # An optional string indicating the location of the expression for error
+            "expression": "A String", # Textual representation of an expression in Common Expression Language
+                # syntax.
+            "location": "A String", # Optional. String indicating the location of the expression for error
                 # reporting, e.g. a file name and a position in the file.
-            "title": "A String", # An optional title for the expression, i.e. a short string describing
+            "title": "A String", # 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.
           },
@@ -3684,7 +3807,7 @@
               #    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` .
+              #    account. For example, `alice@example.com` .
               #
               #
               # * `serviceAccount:{emailid}`: An email address that represents a service
@@ -3693,6 +3816,26 @@
               # * `group:{emailid}`: An email address that represents a Google group.
               #    For example, `admins@example.com`.
               #
+              # * `deleted:user:{emailid}?uid={uniqueid}`: An email address (plus unique
+              #    identifier) representing a user that has been recently deleted. For
+              #    example, `alice@example.com?uid=123456789012345678901`. If the user is
+              #    recovered, this value reverts to `user:{emailid}` and the recovered user
+              #    retains the role in the binding.
+              #
+              # * `deleted:serviceAccount:{emailid}?uid={uniqueid}`: An email address (plus
+              #    unique identifier) representing a service account that has been recently
+              #    deleted. For example,
+              #    `my-other-app@appspot.gserviceaccount.com?uid=123456789012345678901`.
+              #    If the service account is undeleted, this value reverts to
+              #    `serviceAccount:{emailid}` and the undeleted service account retains the
+              #    role in the binding.
+              #
+              # * `deleted:group:{emailid}?uid={uniqueid}`: An email address (plus unique
+              #    identifier) representing a Google group that has been recently
+              #    deleted. For example, `admins@example.com?uid=123456789012345678901`. If
+              #    the group is recovered, this value reverts to `group:{emailid}` and the
+              #    recovered group retains the role in the binding.
+              #
               #
               # * `domain:{domain}`: The G Suite domain (primary) that represents all the
               #    users of that domain. For example, `google.com` or `example.com`.
@@ -3709,9 +3852,31 @@
           # 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.
+          # **Important:** If you use IAM Conditions, you must include the `etag` field
+          # whenever you call `setIamPolicy`. If you omit this field, then IAM allows
+          # you to overwrite a version `3` policy with a version `1` policy, and all of
+          # the conditions in the version `3` policy are lost.
+      "version": 42, # Specifies the format of the policy.
+          #
+          # Valid values are `0`, `1`, and `3`. Requests that specify an invalid value
+          # are rejected.
+          #
+          # Any operation that affects conditional role bindings must specify version
+          # `3`. This requirement applies to the following operations:
+          #
+          # * Getting a policy that includes a conditional role binding
+          # * Adding a conditional role binding to a policy
+          # * Changing a conditional role binding in a policy
+          # * Removing any role binding, with or without a condition, from a policy
+          #   that includes conditions
+          #
+          # **Important:** If you use IAM Conditions, you must include the `etag` field
+          # whenever you call `setIamPolicy`. If you omit this field, then IAM allows
+          # you to overwrite a version `3` policy with a version `1` policy, and all of
+          # the conditions in the version `3` policy are lost.
+          #
+          # If a policy does not include any conditions, operations on that policy may
+          # specify any valid version or leave the field unset.
     },
   }
 
@@ -3723,74 +3888,116 @@
 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.
+    { # An Identity and Access Management (IAM) policy, which specifies access
+      # controls for Google Cloud 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.
+      # A `Policy` is a collection of `bindings`. A `binding` binds one or more
+      # `members` to a single `role`. Members can be user accounts, service accounts,
+      # Google groups, and domains (such as G Suite). A `role` is a named list of
+      # permissions; each `role` can be an IAM predefined role or a user-created
+      # custom role.
       #
-      # **JSON Example**
+      # Optionally, a `binding` can specify a `condition`, which is a logical
+      # expression that allows access to a resource only if the expression evaluates
+      # to `true`. A condition can add constraints based on attributes of the
+      # request, the resource, or both.
+      #
+      # **JSON example:**
       #
       #     {
       #       "bindings": [
       #         {
-      #           "role": "roles/owner",
+      #           "role": "roles/resourcemanager.organizationAdmin",
       #           "members": [
       #             "user:mike@example.com",
       #             "group:admins@example.com",
       #             "domain:google.com",
-      #             "serviceAccount:my-other-app@appspot.gserviceaccount.com"
+      #             "serviceAccount:my-project-id@appspot.gserviceaccount.com"
       #           ]
       #         },
       #         {
-      #           "role": "roles/viewer",
-      #           "members": ["user:sean@example.com"]
+      #           "role": "roles/resourcemanager.organizationViewer",
+      #           "members": ["user:eve@example.com"],
+      #           "condition": {
+      #             "title": "expirable access",
+      #             "description": "Does not grant access after Sep 2020",
+      #             "expression": "request.time &lt; timestamp('2020-10-01T00:00:00.000Z')",
+      #           }
       #         }
-      #       ]
+      #       ],
+      #       "etag": "BwWWja0YfJA=",
+      #       "version": 3
       #     }
       #
-      # **YAML Example**
+      # **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
+      #       - serviceAccount:my-project-id@appspot.gserviceaccount.com
+      #       role: roles/resourcemanager.organizationAdmin
       #     - members:
-      #       - user:sean@example.com
-      #       role: roles/viewer
-      #
+      #       - user:eve@example.com
+      #       role: roles/resourcemanager.organizationViewer
+      #       condition:
+      #         title: expirable access
+      #         description: Does not grant access after Sep 2020
+      #         expression: request.time &lt; timestamp('2020-10-01T00:00:00.000Z')
+      #     - etag: BwWWja0YfJA=
+      #     - version: 3
       #
       # 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.
+      # [IAM documentation](https://cloud.google.com/iam/docs/).
+    "bindings": [ # Associates a list of `members` to a `role`. Optionally, may specify a
+        # `condition` that determines how and when the `bindings` are applied. Each
+        # of the `bindings` must contain at least one member.
       { # Associates `members` with a `role`.
         "role": "A String", # Role that is assigned to `members`.
             # For example, `roles/viewer`, `roles/editor`, or `roles/owner`.
-        "condition": { # Represents an expression text. Example: # The condition that is associated with this binding.
+        "condition": { # Represents a textual expression in the Common Expression Language (CEL) # 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.
+            # syntax. CEL is a C-like expression language. The syntax and semantics of CEL
+            # are documented at https://github.com/google/cel-spec.
             #
-            #     title: "User account presence"
-            #     description: "Determines whether the request has a user account"
-            #     expression: "size(request.user) > 0"
-          "description": "A String", # An optional description of the expression. This is a longer text which
+            # Example (Comparison):
+            #
+            #     title: "Summary size limit"
+            #     description: "Determines if a summary is less than 100 chars"
+            #     expression: "document.summary.size() &lt; 100"
+            #
+            # Example (Equality):
+            #
+            #     title: "Requestor is owner"
+            #     description: "Determines if requestor is the document owner"
+            #     expression: "document.owner == request.auth.claims.email"
+            #
+            # Example (Logic):
+            #
+            #     title: "Public documents"
+            #     description: "Determine whether the document should be publicly visible"
+            #     expression: "document.type != 'private' &amp;&amp; document.type != 'internal'"
+            #
+            # Example (Data Manipulation):
+            #
+            #     title: "Notification string"
+            #     description: "Create a notification string with a timestamp."
+            #     expression: "'New message received at ' + string(document.create_time)"
+            #
+            # The exact variables and functions that may be referenced within an expression
+            # are determined by the service that evaluates it. See the service
+            # documentation for additional information.
+          "description": "A String", # Optional. Description of the expression. This is a longer text which
               # describes the expression, e.g. when hovered over it in a UI.
-          "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.
-          "location": "A String", # An optional string indicating the location of the expression for error
+          "expression": "A String", # Textual representation of an expression in Common Expression Language
+              # syntax.
+          "location": "A String", # Optional. String indicating the location of the expression for error
               # reporting, e.g. a file name and a position in the file.
-          "title": "A String", # An optional title for the expression, i.e. a short string describing
+          "title": "A String", # 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.
         },
@@ -3804,7 +4011,7 @@
             #    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` .
+            #    account. For example, `alice@example.com` .
             #
             #
             # * `serviceAccount:{emailid}`: An email address that represents a service
@@ -3813,6 +4020,26 @@
             # * `group:{emailid}`: An email address that represents a Google group.
             #    For example, `admins@example.com`.
             #
+            # * `deleted:user:{emailid}?uid={uniqueid}`: An email address (plus unique
+            #    identifier) representing a user that has been recently deleted. For
+            #    example, `alice@example.com?uid=123456789012345678901`. If the user is
+            #    recovered, this value reverts to `user:{emailid}` and the recovered user
+            #    retains the role in the binding.
+            #
+            # * `deleted:serviceAccount:{emailid}?uid={uniqueid}`: An email address (plus
+            #    unique identifier) representing a service account that has been recently
+            #    deleted. For example,
+            #    `my-other-app@appspot.gserviceaccount.com?uid=123456789012345678901`.
+            #    If the service account is undeleted, this value reverts to
+            #    `serviceAccount:{emailid}` and the undeleted service account retains the
+            #    role in the binding.
+            #
+            # * `deleted:group:{emailid}?uid={uniqueid}`: An email address (plus unique
+            #    identifier) representing a Google group that has been recently
+            #    deleted. For example, `admins@example.com?uid=123456789012345678901`. If
+            #    the group is recovered, this value reverts to `group:{emailid}` and the
+            #    recovered group retains the role in the binding.
+            #
             #
             # * `domain:{domain}`: The G Suite domain (primary) that represents all the
             #    users of that domain. For example, `google.com` or `example.com`.
@@ -3829,14 +4056,36 @@
         # 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.
+        # **Important:** If you use IAM Conditions, you must include the `etag` field
+        # whenever you call `setIamPolicy`. If you omit this field, then IAM allows
+        # you to overwrite a version `3` policy with a version `1` policy, and all of
+        # the conditions in the version `3` policy are lost.
+    "version": 42, # Specifies the format of the policy.
+        #
+        # Valid values are `0`, `1`, and `3`. Requests that specify an invalid value
+        # are rejected.
+        #
+        # Any operation that affects conditional role bindings must specify version
+        # `3`. This requirement applies to the following operations:
+        #
+        # * Getting a policy that includes a conditional role binding
+        # * Adding a conditional role binding to a policy
+        # * Changing a conditional role binding in a policy
+        # * Removing any role binding, with or without a condition, from a policy
+        #   that includes conditions
+        #
+        # **Important:** If you use IAM Conditions, you must include the `etag` field
+        # whenever you call `setIamPolicy`. If you omit this field, then IAM allows
+        # you to overwrite a version `3` policy with a version `1` policy, and all of
+        # the conditions in the version `3` policy are lost.
+        #
+        # If a policy does not include any conditions, operations on that policy may
+        # specify any valid version or leave the field unset.
   }</pre>
 </div>
 
 <div class="method">
-    <code class="details" id="testIamPermissions">testIamPermissions(resource, body, x__xgafv=None)</code>
+    <code class="details" id="testIamPermissions">testIamPermissions(resource, body=None, x__xgafv=None)</code>
   <pre>Returns permissions that a caller has on a Queue.
 If the resource does not exist, this will return an empty set of
 permissions, not a NOT_FOUND error.
@@ -3848,7 +4097,7 @@
 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)
+  body: object, The request body.
     The object takes the form of:
 
 { # Request message for `TestIamPermissions` method.