chore: regens API reference docs (#889)

diff --git a/docs/dyn/bigtableadmin_v2.projects.instances.appProfiles.html b/docs/dyn/bigtableadmin_v2.projects.instances.appProfiles.html
index 7701e0b..3cc7726 100644
--- a/docs/dyn/bigtableadmin_v2.projects.instances.appProfiles.html
+++ b/docs/dyn/bigtableadmin_v2.projects.instances.appProfiles.html
@@ -75,7 +75,7 @@
 <h1><a href="bigtableadmin_v2.html">Cloud Bigtable Admin API</a> . <a href="bigtableadmin_v2.projects.html">projects</a> . <a href="bigtableadmin_v2.projects.instances.html">instances</a> . <a href="bigtableadmin_v2.projects.instances.appProfiles.html">appProfiles</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
-  <code><a href="#create">create(parent, body, ignoreWarnings=None, appProfileId=None, x__xgafv=None)</a></code></p>
+  <code><a href="#create">create(parent, body=None, ignoreWarnings=None, appProfileId=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Creates an app profile within an instance.</p>
 <p class="toc_element">
   <code><a href="#delete">delete(name, ignoreWarnings=None, x__xgafv=None)</a></code></p>
@@ -90,18 +90,18 @@
   <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, ignoreWarnings=None, updateMask=None, x__xgafv=None)</a></code></p>
+  <code><a href="#patch">patch(name, body=None, ignoreWarnings=None, updateMask=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Updates an app profile within an instance.</p>
 <h3>Method Details</h3>
 <div class="method">
-    <code class="details" id="create">create(parent, body, ignoreWarnings=None, appProfileId=None, x__xgafv=None)</code>
+    <code class="details" id="create">create(parent, body=None, ignoreWarnings=None, appProfileId=None, x__xgafv=None)</code>
   <pre>Creates an app profile within an instance.
 
 Args:
-  parent: string, The unique name of the instance in which to create the new app profile.
+  parent: string, Required. The unique name of the instance in which to create the new app profile.
 Values are of the form
-`projects/<project>/instances/<instance>`. (required)
-  body: object, The request body. (required)
+`projects/{project}/instances/{instance}`. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # A configuration object describing how Cloud Bigtable should treat traffic
@@ -116,7 +116,7 @@
         # [RFC 7232](https://tools.ietf.org/html/rfc7232#section-2.3) for more
         # details.
     "singleClusterRouting": { # Unconditionally routes all read/write requests to a specific cluster. # Use a single-cluster routing policy.
-        # This option preserves read-your-writes consistency, but does not improve
+        # This option preserves read-your-writes consistency but does not improve
         # availability.
       "clusterId": "A String", # The cluster to which read/write requests should be routed.
       "allowTransactionalWrites": True or False, # Whether or not `CheckAndMutateRow` and `ReadModifyWriteRow` requests are
@@ -125,16 +125,17 @@
     },
     "name": "A String", # (`OutputOnly`)
         # The unique name of the app profile. Values are of the form
-        # `projects/<project>/instances/<instance>/appProfiles/_a-zA-Z0-9*`.
-    "multiClusterRoutingUseAny": { # Read/write requests may be routed to any cluster in the instance, and will # Use a multi-cluster routing policy that may pick any cluster.
-        # fail over to another cluster in the event of transient errors or delays.
-        # Choosing this option sacrifices read-your-writes consistency to improve
-        # availability.
+        # `projects/&lt;project&gt;/instances/&lt;instance&gt;/appProfiles/_a-zA-Z0-9*`.
+    "multiClusterRoutingUseAny": { # Read/write requests are routed to the nearest cluster in the instance, and # Use a multi-cluster routing policy.
+        # will fail over to the nearest cluster that is available in the event of
+        # transient errors or delays. Clusters in a region are considered
+        # equidistant. Choosing this option sacrifices read-your-writes consistency
+        # to improve availability.
     },
   }
 
   ignoreWarnings: boolean, If true, ignore safety checks when creating the app profile.
-  appProfileId: string, The ID to be used when referring to the new app profile within its
+  appProfileId: string, Required. The ID to be used when referring to the new app profile within its
 instance, e.g., just `myprofile` rather than
 `projects/myproject/instances/myinstance/appProfiles/myprofile`.
   x__xgafv: string, V1 error format.
@@ -157,7 +158,7 @@
           # [RFC 7232](https://tools.ietf.org/html/rfc7232#section-2.3) for more
           # details.
       "singleClusterRouting": { # Unconditionally routes all read/write requests to a specific cluster. # Use a single-cluster routing policy.
-          # This option preserves read-your-writes consistency, but does not improve
+          # This option preserves read-your-writes consistency but does not improve
           # availability.
         "clusterId": "A String", # The cluster to which read/write requests should be routed.
         "allowTransactionalWrites": True or False, # Whether or not `CheckAndMutateRow` and `ReadModifyWriteRow` requests are
@@ -166,11 +167,12 @@
       },
       "name": "A String", # (`OutputOnly`)
           # The unique name of the app profile. Values are of the form
-          # `projects/<project>/instances/<instance>/appProfiles/_a-zA-Z0-9*`.
-      "multiClusterRoutingUseAny": { # Read/write requests may be routed to any cluster in the instance, and will # Use a multi-cluster routing policy that may pick any cluster.
-          # fail over to another cluster in the event of transient errors or delays.
-          # Choosing this option sacrifices read-your-writes consistency to improve
-          # availability.
+          # `projects/&lt;project&gt;/instances/&lt;instance&gt;/appProfiles/_a-zA-Z0-9*`.
+      "multiClusterRoutingUseAny": { # Read/write requests are routed to the nearest cluster in the instance, and # Use a multi-cluster routing policy.
+          # will fail over to the nearest cluster that is available in the event of
+          # transient errors or delays. Clusters in a region are considered
+          # equidistant. Choosing this option sacrifices read-your-writes consistency
+          # to improve availability.
       },
     }</pre>
 </div>
@@ -180,9 +182,9 @@
   <pre>Deletes an app profile from an instance.
 
 Args:
-  name: string, The unique name of the app profile to be deleted. Values are of the form
-`projects/<project>/instances/<instance>/appProfiles/<app_profile>`. (required)
-  ignoreWarnings: boolean, If true, ignore safety checks when deleting the app profile.
+  name: string, Required. The unique name of the app profile to be deleted. Values are of the form
+`projects/{project}/instances/{instance}/appProfiles/{app_profile}`. (required)
+  ignoreWarnings: boolean, Required. If true, ignore safety checks when deleting the app profile.
   x__xgafv: string, V1 error format.
     Allowed values
       1 - v1 error format
@@ -208,8 +210,8 @@
   <pre>Gets information about an app profile.
 
 Args:
-  name: string, The unique name of the requested app profile. Values are of the form
-`projects/<project>/instances/<instance>/appProfiles/<app_profile>`. (required)
+  name: string, Required. The unique name of the requested app profile. Values are of the form
+`projects/{project}/instances/{instance}/appProfiles/{app_profile}`. (required)
   x__xgafv: string, V1 error format.
     Allowed values
       1 - v1 error format
@@ -230,7 +232,7 @@
           # [RFC 7232](https://tools.ietf.org/html/rfc7232#section-2.3) for more
           # details.
       "singleClusterRouting": { # Unconditionally routes all read/write requests to a specific cluster. # Use a single-cluster routing policy.
-          # This option preserves read-your-writes consistency, but does not improve
+          # This option preserves read-your-writes consistency but does not improve
           # availability.
         "clusterId": "A String", # The cluster to which read/write requests should be routed.
         "allowTransactionalWrites": True or False, # Whether or not `CheckAndMutateRow` and `ReadModifyWriteRow` requests are
@@ -239,11 +241,12 @@
       },
       "name": "A String", # (`OutputOnly`)
           # The unique name of the app profile. Values are of the form
-          # `projects/<project>/instances/<instance>/appProfiles/_a-zA-Z0-9*`.
-      "multiClusterRoutingUseAny": { # Read/write requests may be routed to any cluster in the instance, and will # Use a multi-cluster routing policy that may pick any cluster.
-          # fail over to another cluster in the event of transient errors or delays.
-          # Choosing this option sacrifices read-your-writes consistency to improve
-          # availability.
+          # `projects/&lt;project&gt;/instances/&lt;instance&gt;/appProfiles/_a-zA-Z0-9*`.
+      "multiClusterRoutingUseAny": { # Read/write requests are routed to the nearest cluster in the instance, and # Use a multi-cluster routing policy.
+          # will fail over to the nearest cluster that is available in the event of
+          # transient errors or delays. Clusters in a region are considered
+          # equidistant. Choosing this option sacrifices read-your-writes consistency
+          # to improve availability.
       },
     }</pre>
 </div>
@@ -253,10 +256,10 @@
   <pre>Lists information about app profiles in an instance.
 
 Args:
-  parent: string, The unique name of the instance for which a list of app profiles is
+  parent: string, Required. The unique name of the instance for which a list of app profiles is
 requested. Values are of the form
-`projects/<project>/instances/<instance>`.
-Use `<instance> = '-'` to list AppProfiles for all Instances in a project,
+`projects/{project}/instances/{instance}`.
+Use `{instance} = '-'` to list AppProfiles for all Instances in a project,
 e.g., `projects/myproject/instances/-`. (required)
   pageToken: string, The value of `next_page_token` returned by a previous call.
   x__xgafv: string, V1 error format.
@@ -264,7 +267,14 @@
       1 - v1 error format
       2 - v2 error format
   pageSize: integer, Maximum number of results per page.
-CURRENTLY UNIMPLEMENTED AND IGNORED.
+
+A page_size of zero lets the server choose the number of items to return.
+A page_size which is strictly positive will return at most that many items.
+A negative page_size will cause an error.
+
+Following the first request, subsequent paginated calls are not required
+to pass a page_size. If a page_size is set in subsequent calls, it must
+match the page_size given in the first request.
 
 Returns:
   An object of the form:
@@ -276,7 +286,7 @@
     "failedLocations": [ # Locations from which AppProfile information could not be retrieved,
         # due to an outage or some other transient condition.
         # AppProfiles from these locations may be missing from `app_profiles`.
-        # Values are of the form `projects/<project>/locations/<zone_id>`
+        # Values are of the form `projects/&lt;project&gt;/locations/&lt;zone_id&gt;`
       "A String",
     ],
     "appProfiles": [ # The list of requested app profiles.
@@ -292,7 +302,7 @@
               # [RFC 7232](https://tools.ietf.org/html/rfc7232#section-2.3) for more
               # details.
           "singleClusterRouting": { # Unconditionally routes all read/write requests to a specific cluster. # Use a single-cluster routing policy.
-              # This option preserves read-your-writes consistency, but does not improve
+              # This option preserves read-your-writes consistency but does not improve
               # availability.
             "clusterId": "A String", # The cluster to which read/write requests should be routed.
             "allowTransactionalWrites": True or False, # Whether or not `CheckAndMutateRow` and `ReadModifyWriteRow` requests are
@@ -301,11 +311,12 @@
           },
           "name": "A String", # (`OutputOnly`)
               # The unique name of the app profile. Values are of the form
-              # `projects/<project>/instances/<instance>/appProfiles/_a-zA-Z0-9*`.
-          "multiClusterRoutingUseAny": { # Read/write requests may be routed to any cluster in the instance, and will # Use a multi-cluster routing policy that may pick any cluster.
-              # fail over to another cluster in the event of transient errors or delays.
-              # Choosing this option sacrifices read-your-writes consistency to improve
-              # availability.
+              # `projects/&lt;project&gt;/instances/&lt;instance&gt;/appProfiles/_a-zA-Z0-9*`.
+          "multiClusterRoutingUseAny": { # Read/write requests are routed to the nearest cluster in the instance, and # Use a multi-cluster routing policy.
+              # will fail over to the nearest cluster that is available in the event of
+              # transient errors or delays. Clusters in a region are considered
+              # equidistant. Choosing this option sacrifices read-your-writes consistency
+              # to improve availability.
           },
         },
     ],
@@ -327,14 +338,14 @@
 </div>
 
 <div class="method">
-    <code class="details" id="patch">patch(name, body, ignoreWarnings=None, updateMask=None, x__xgafv=None)</code>
+    <code class="details" id="patch">patch(name, body=None, ignoreWarnings=None, updateMask=None, x__xgafv=None)</code>
   <pre>Updates an app profile within an instance.
 
 Args:
   name: string, (`OutputOnly`)
 The unique name of the app profile. Values are of the form
-`projects/<project>/instances/<instance>/appProfiles/_a-zA-Z0-9*`. (required)
-  body: object, The request body. (required)
+`projects/&lt;project&gt;/instances/&lt;instance&gt;/appProfiles/_a-zA-Z0-9*`. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # A configuration object describing how Cloud Bigtable should treat traffic
@@ -349,7 +360,7 @@
         # [RFC 7232](https://tools.ietf.org/html/rfc7232#section-2.3) for more
         # details.
     "singleClusterRouting": { # Unconditionally routes all read/write requests to a specific cluster. # Use a single-cluster routing policy.
-        # This option preserves read-your-writes consistency, but does not improve
+        # This option preserves read-your-writes consistency but does not improve
         # availability.
       "clusterId": "A String", # The cluster to which read/write requests should be routed.
       "allowTransactionalWrites": True or False, # Whether or not `CheckAndMutateRow` and `ReadModifyWriteRow` requests are
@@ -358,16 +369,17 @@
     },
     "name": "A String", # (`OutputOnly`)
         # The unique name of the app profile. Values are of the form
-        # `projects/<project>/instances/<instance>/appProfiles/_a-zA-Z0-9*`.
-    "multiClusterRoutingUseAny": { # Read/write requests may be routed to any cluster in the instance, and will # Use a multi-cluster routing policy that may pick any cluster.
-        # fail over to another cluster in the event of transient errors or delays.
-        # Choosing this option sacrifices read-your-writes consistency to improve
-        # availability.
+        # `projects/&lt;project&gt;/instances/&lt;instance&gt;/appProfiles/_a-zA-Z0-9*`.
+    "multiClusterRoutingUseAny": { # Read/write requests are routed to the nearest cluster in the instance, and # Use a multi-cluster routing policy.
+        # will fail over to the nearest cluster that is available in the event of
+        # transient errors or delays. Clusters in a region are considered
+        # equidistant. Choosing this option sacrifices read-your-writes consistency
+        # to improve availability.
     },
   }
 
   ignoreWarnings: boolean, If true, ignore safety checks when updating the app profile.
-  updateMask: string, The subset of app profile fields which should be replaced.
+  updateMask: string, Required. The subset of app profile fields which should be replaced.
 If unset, all fields will be replaced.
   x__xgafv: string, V1 error format.
     Allowed values
@@ -379,64 +391,35 @@
 
     { # This resource represents a long-running operation that is the result of a
       # network API call.
+    "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.
+    },
     "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.
     },
+    "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.
+    "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 # 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). The error model is designed to be:
+        # used by [gRPC](https://github.com/grpc). Each `Status` message contains
+        # three pieces of data: error code, error message, and error details.
         #
-        # - Simple to use and understand for most users
-        # - Flexible enough to meet unexpected needs
-        #
-        # # Overview
-        #
-        # The `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 mapping
-        #
-        # The `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 uses
-        #
-        # The 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.
+        # 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.
@@ -448,22 +431,6 @@
         },
       ],
     },
-    "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>