chore: regens API reference docs (#889)

diff --git a/docs/dyn/file_v1beta1.projects.locations.instances.html b/docs/dyn/file_v1beta1.projects.locations.instances.html
index 6e31803..28c3592 100644
--- a/docs/dyn/file_v1beta1.projects.locations.instances.html
+++ b/docs/dyn/file_v1beta1.projects.locations.instances.html
@@ -75,7 +75,7 @@
 <h1><a href="file_v1beta1.html">Cloud Filestore API</a> . <a href="file_v1beta1.projects.html">projects</a> . <a href="file_v1beta1.projects.locations.html">locations</a> . <a href="file_v1beta1.projects.locations.instances.html">instances</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
-  <code><a href="#create">create(parent, body, instanceId=None, x__xgafv=None)</a></code></p>
+  <code><a href="#create">create(parent, body=None, instanceId=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Creates an instance.</p>
 <p class="toc_element">
   <code><a href="#delete">delete(name, x__xgafv=None)</a></code></p>
@@ -90,41 +90,41 @@
   <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 the settings of a specific instance.</p>
 <h3>Method Details</h3>
 <div class="method">
-    <code class="details" id="create">create(parent, body, instanceId=None, x__xgafv=None)</code>
+    <code class="details" id="create">create(parent, body=None, instanceId=None, x__xgafv=None)</code>
   <pre>Creates an instance.
 
 Args:
-  parent: string, The instance's project and location, in the format
+  parent: string, Required. The instance's project and location, in the format
 projects/{project_id}/locations/{location}. In Cloud Filestore,
 locations map to GCP zones, for example **us-west1-b**. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # A Cloud Filestore instance.
-    "description": "A String", # Optional. A description of the instance (2048 characters or less).
+    "name": "A String", # Output only. The resource name of the instance, in the format
+        # projects/{project_id}/locations/{location_id}/instances/{instance_id}.
     "labels": { # Resource labels to represent user provided metadata.
       "a_key": "A String",
     },
     "networks": [ # VPC networks to which the instance is connected.
         # For this version, only a single network is supported.
       { # Network configuration for the instance.
-        "reservedIpRange": "A String", # A /29 CIDR block in one of the
+        "reservedIpRange": "A String", # A /29 CIDR block for Basic or a /23 CIDR block for High Scale in one of the
             # [internal IP address
             # ranges](https://www.arin.net/knowledge/address_filters.html) that
             # identifies the range of IP addresses reserved for this instance. For
-            # example, 10.0.0.0/29 or 192.168.0.0/29. The range you specify can't overlap
+            # example, 10.0.0.0/29 or 192.168.0.0/23. The range you specify can't overlap
             # with either existing subnets or assigned IP address ranges for other Cloud
             # Filestore instances in the selected VPC network.
         "modes": [ # Internet protocol versions for which the instance has IP addresses
             # assigned. For this version, only MODE_IPV4 is supported.
           "A String",
         ],
-        "ipAddresses": [ # Output only.
-            # IPv4 addresses in the format
+        "ipAddresses": [ # Output only. IPv4 addresses in the format
             # {octet 1}.{octet 2}.{octet 3}.{octet 4} or IPv6 addresses in the format
             # {block 1}:{block 2}:{block 3}:{block 4}:{block 5}:{block 6}:{block
             # 7}:{block 8}.
@@ -135,8 +135,7 @@
             # instance is connected.
       },
     ],
-    "state": "A String", # Output only.
-        # The instance state.
+    "state": "A String", # Output only. The instance state.
     "etag": "A String", # Server-specified ETag for the instance resource to prevent simultaneous
         # updates from overwriting each other.
     "fileShares": [ # File system shares on the instance.
@@ -148,17 +147,16 @@
       },
     ],
     "tier": "A String", # The service tier of the instance.
-    "createTime": "A String", # Output only.
-        # The time when the instance was created.
-    "statusMessage": "A String", # Output only.
-        # Additional information about the instance state, if available.
-    "name": "A String", # Output only.
-        # The resource name of the instance, in the format
-        # projects/{project_id}/locations/{location_id}/instances/{instance_id}.
+    "createTime": "A String", # Output only. The time when the instance was created.
+    "statusMessage": "A String", # Output only. Additional information about the instance state, if available.
+    "description": "A String", # The description of the instance (2048 characters or less).
   }
 
-  instanceId: string, The name of the instance to create.
-The name must be unique for the specified project and location.
+  instanceId: string, Required. The ID of the instance to create.
+The ID must be unique within the specified project and location.
+
+This value must start with a lowercase letter followed by up to 62
+lowercase letters, numbers, or hyphens, and cannot end with a hyphen.
   x__xgafv: string, V1 error format.
     Allowed values
       1 - v1 error format
@@ -193,56 +191,11 @@
         # `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.
@@ -262,7 +215,7 @@
   <pre>Deletes an instance.
 
 Args:
-  name: string, The instance resource name, in the format
+  name: string, Required. The instance resource name, in the format
 projects/{project_id}/locations/{location}/instances/{instance_id} (required)
   x__xgafv: string, V1 error format.
     Allowed values
@@ -298,56 +251,11 @@
         # `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.
@@ -367,7 +275,7 @@
   <pre>Gets the details of a specific instance.
 
 Args:
-  name: string, The instance resource name, in the format
+  name: string, Required. The instance resource name, in the format
 projects/{project_id}/locations/{location}/instances/{instance_id}. (required)
   x__xgafv: string, V1 error format.
     Allowed values
@@ -378,26 +286,26 @@
   An object of the form:
 
     { # A Cloud Filestore instance.
-      "description": "A String", # Optional. A description of the instance (2048 characters or less).
+      "name": "A String", # Output only. The resource name of the instance, in the format
+          # projects/{project_id}/locations/{location_id}/instances/{instance_id}.
       "labels": { # Resource labels to represent user provided metadata.
         "a_key": "A String",
       },
       "networks": [ # VPC networks to which the instance is connected.
           # For this version, only a single network is supported.
         { # Network configuration for the instance.
-          "reservedIpRange": "A String", # A /29 CIDR block in one of the
+          "reservedIpRange": "A String", # A /29 CIDR block for Basic or a /23 CIDR block for High Scale in one of the
               # [internal IP address
               # ranges](https://www.arin.net/knowledge/address_filters.html) that
               # identifies the range of IP addresses reserved for this instance. For
-              # example, 10.0.0.0/29 or 192.168.0.0/29. The range you specify can't overlap
+              # example, 10.0.0.0/29 or 192.168.0.0/23. The range you specify can't overlap
               # with either existing subnets or assigned IP address ranges for other Cloud
               # Filestore instances in the selected VPC network.
           "modes": [ # Internet protocol versions for which the instance has IP addresses
               # assigned. For this version, only MODE_IPV4 is supported.
             "A String",
           ],
-          "ipAddresses": [ # Output only.
-              # IPv4 addresses in the format
+          "ipAddresses": [ # Output only. IPv4 addresses in the format
               # {octet 1}.{octet 2}.{octet 3}.{octet 4} or IPv6 addresses in the format
               # {block 1}:{block 2}:{block 3}:{block 4}:{block 5}:{block 6}:{block
               # 7}:{block 8}.
@@ -408,8 +316,7 @@
               # instance is connected.
         },
       ],
-      "state": "A String", # Output only.
-          # The instance state.
+      "state": "A String", # Output only. The instance state.
       "etag": "A String", # Server-specified ETag for the instance resource to prevent simultaneous
           # updates from overwriting each other.
       "fileShares": [ # File system shares on the instance.
@@ -421,13 +328,9 @@
         },
       ],
       "tier": "A String", # The service tier of the instance.
-      "createTime": "A String", # Output only.
-          # The time when the instance was created.
-      "statusMessage": "A String", # Output only.
-          # Additional information about the instance state, if available.
-      "name": "A String", # Output only.
-          # The resource name of the instance, in the format
-          # projects/{project_id}/locations/{location_id}/instances/{instance_id}.
+      "createTime": "A String", # Output only. The time when the instance was created.
+      "statusMessage": "A String", # Output only. Additional information about the instance state, if available.
+      "description": "A String", # The description of the instance (2048 characters or less).
     }</pre>
 </div>
 
@@ -437,7 +340,7 @@
 or for all locations.
 
 Args:
-  parent: string, The project and location for which to retrieve instance information,
+  parent: string, Required. The project and location for which to retrieve instance information,
 in the format projects/{project_id}/locations/{location}. In Cloud
 Filestore, locations map to GCP zones, for example **us-west1-b**. To
 retrieve instance information for all locations, use "-" for the {location}
@@ -468,26 +371,26 @@
         # response will only return instances in reachable locations and the
         # "unreachable" field will be populated with a list of unreachable locations.
       { # A Cloud Filestore instance.
-          "description": "A String", # Optional. A description of the instance (2048 characters or less).
+          "name": "A String", # Output only. The resource name of the instance, in the format
+              # projects/{project_id}/locations/{location_id}/instances/{instance_id}.
           "labels": { # Resource labels to represent user provided metadata.
             "a_key": "A String",
           },
           "networks": [ # VPC networks to which the instance is connected.
               # For this version, only a single network is supported.
             { # Network configuration for the instance.
-              "reservedIpRange": "A String", # A /29 CIDR block in one of the
+              "reservedIpRange": "A String", # A /29 CIDR block for Basic or a /23 CIDR block for High Scale in one of the
                   # [internal IP address
                   # ranges](https://www.arin.net/knowledge/address_filters.html) that
                   # identifies the range of IP addresses reserved for this instance. For
-                  # example, 10.0.0.0/29 or 192.168.0.0/29. The range you specify can't overlap
+                  # example, 10.0.0.0/29 or 192.168.0.0/23. The range you specify can't overlap
                   # with either existing subnets or assigned IP address ranges for other Cloud
                   # Filestore instances in the selected VPC network.
               "modes": [ # Internet protocol versions for which the instance has IP addresses
                   # assigned. For this version, only MODE_IPV4 is supported.
                 "A String",
               ],
-              "ipAddresses": [ # Output only.
-                  # IPv4 addresses in the format
+              "ipAddresses": [ # Output only. IPv4 addresses in the format
                   # {octet 1}.{octet 2}.{octet 3}.{octet 4} or IPv6 addresses in the format
                   # {block 1}:{block 2}:{block 3}:{block 4}:{block 5}:{block 6}:{block
                   # 7}:{block 8}.
@@ -498,8 +401,7 @@
                   # instance is connected.
             },
           ],
-          "state": "A String", # Output only.
-              # The instance state.
+          "state": "A String", # Output only. The instance state.
           "etag": "A String", # Server-specified ETag for the instance resource to prevent simultaneous
               # updates from overwriting each other.
           "fileShares": [ # File system shares on the instance.
@@ -511,13 +413,9 @@
             },
           ],
           "tier": "A String", # The service tier of the instance.
-          "createTime": "A String", # Output only.
-              # The time when the instance was created.
-          "statusMessage": "A String", # Output only.
-              # Additional information about the instance state, if available.
-          "name": "A String", # Output only.
-              # The resource name of the instance, in the format
-              # projects/{project_id}/locations/{location_id}/instances/{instance_id}.
+          "createTime": "A String", # Output only. The time when the instance was created.
+          "statusMessage": "A String", # Output only. Additional information about the instance state, if available.
+          "description": "A String", # The description of the instance (2048 characters or less).
         },
     ],
   }</pre>
@@ -538,37 +436,36 @@
 </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 the settings of a specific instance.
 
 Args:
-  name: string, Output only.
-The resource name of the instance, in the format
+  name: string, Output only. The resource name of the instance, in the format
 projects/{project_id}/locations/{location_id}/instances/{instance_id}. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # A Cloud Filestore instance.
-    "description": "A String", # Optional. A description of the instance (2048 characters or less).
+    "name": "A String", # Output only. The resource name of the instance, in the format
+        # projects/{project_id}/locations/{location_id}/instances/{instance_id}.
     "labels": { # Resource labels to represent user provided metadata.
       "a_key": "A String",
     },
     "networks": [ # VPC networks to which the instance is connected.
         # For this version, only a single network is supported.
       { # Network configuration for the instance.
-        "reservedIpRange": "A String", # A /29 CIDR block in one of the
+        "reservedIpRange": "A String", # A /29 CIDR block for Basic or a /23 CIDR block for High Scale in one of the
             # [internal IP address
             # ranges](https://www.arin.net/knowledge/address_filters.html) that
             # identifies the range of IP addresses reserved for this instance. For
-            # example, 10.0.0.0/29 or 192.168.0.0/29. The range you specify can't overlap
+            # example, 10.0.0.0/29 or 192.168.0.0/23. The range you specify can't overlap
             # with either existing subnets or assigned IP address ranges for other Cloud
             # Filestore instances in the selected VPC network.
         "modes": [ # Internet protocol versions for which the instance has IP addresses
             # assigned. For this version, only MODE_IPV4 is supported.
           "A String",
         ],
-        "ipAddresses": [ # Output only.
-            # IPv4 addresses in the format
+        "ipAddresses": [ # Output only. IPv4 addresses in the format
             # {octet 1}.{octet 2}.{octet 3}.{octet 4} or IPv6 addresses in the format
             # {block 1}:{block 2}:{block 3}:{block 4}:{block 5}:{block 6}:{block
             # 7}:{block 8}.
@@ -579,8 +476,7 @@
             # instance is connected.
       },
     ],
-    "state": "A String", # Output only.
-        # The instance state.
+    "state": "A String", # Output only. The instance state.
     "etag": "A String", # Server-specified ETag for the instance resource to prevent simultaneous
         # updates from overwriting each other.
     "fileShares": [ # File system shares on the instance.
@@ -592,19 +488,18 @@
       },
     ],
     "tier": "A String", # The service tier of the instance.
-    "createTime": "A String", # Output only.
-        # The time when the instance was created.
-    "statusMessage": "A String", # Output only.
-        # Additional information about the instance state, if available.
-    "name": "A String", # Output only.
-        # The resource name of the instance, in the format
-        # projects/{project_id}/locations/{location_id}/instances/{instance_id}.
+    "createTime": "A String", # Output only. The time when the instance was created.
+    "statusMessage": "A String", # Output only. Additional information about the instance state, if available.
+    "description": "A String", # The description of the instance (2048 characters or less).
   }
 
-  updateMask: string, Mask of fields to update.  At least one path must be supplied in this
+  updateMask: string, Required. Mask of fields to update.  At least one path must be supplied in this
 field.  The elements of the repeated paths field may only include these
 fields:
-"description"
+
+* "description"
+* "file_shares"
+* "labels"
   x__xgafv: string, V1 error format.
     Allowed values
       1 - v1 error format
@@ -639,56 +534,11 @@
         # `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.