chore: regens API reference docs (#889)

diff --git a/docs/dyn/serviceusage_v1beta1.operations.html b/docs/dyn/serviceusage_v1beta1.operations.html
index bba2ca8..5b423aa 100644
--- a/docs/dyn/serviceusage_v1beta1.operations.html
+++ b/docs/dyn/serviceusage_v1beta1.operations.html
@@ -102,28 +102,6 @@
 
     { # 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). Each `Status` message contains
@@ -142,6 +120,28 @@
         },
       ],
     },
+    "done": True or False, # If the value is `false`, it means the operation is still in progress.
+        # If `true`, the operation is completed, and either `error` or `response` is
+        # available.
+    "response": { # The normal response of the operation in case of success.  If the original
+        # method returns no data on success, such as `Delete`, the response is
+        # `google.protobuf.Empty`.  If the original method is standard
+        # `Get`/`Create`/`Update`, the response should be the resource.  For other
+        # methods, the response should have the type `XxxResponse`, where `Xxx`
+        # is the original method name.  For example, if the original method name
+        # is `TakeSnapshot()`, the inferred response type is
+        # `TakeSnapshotResponse`.
+      "a_key": "", # Properties of the object. Contains field @type with type URL.
+    },
+    "name": "A String", # The server-assigned name, which is only unique within the same service that
+        # originally returns it. If you use the default HTTP mapping, the
+        # `name` should be a resource name ending with `operations/{unique_id}`.
+    "metadata": { # Service-specific metadata associated with the operation.  It typically
+        # contains progress information and common metadata such as create time.
+        # Some services might not provide such metadata.  Any method that returns a
+        # long-running operation should document the metadata type, if any.
+      "a_key": "", # Properties of the object. Contains field @type with type URL.
+    },
   }</pre>
 </div>
 
@@ -172,32 +172,9 @@
   An object of the form:
 
     { # The response message for Operations.ListOperations.
-    "nextPageToken": "A String", # The standard List next-page token.
     "operations": [ # A list of operations that matches the specified filter in the request.
       { # 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). Each `Status` message contains
@@ -216,8 +193,31 @@
             },
           ],
         },
+        "done": True or False, # If the value is `false`, it means the operation is still in progress.
+            # If `true`, the operation is completed, and either `error` or `response` is
+            # available.
+        "response": { # The normal response of the operation in case of success.  If the original
+            # method returns no data on success, such as `Delete`, the response is
+            # `google.protobuf.Empty`.  If the original method is standard
+            # `Get`/`Create`/`Update`, the response should be the resource.  For other
+            # methods, the response should have the type `XxxResponse`, where `Xxx`
+            # is the original method name.  For example, if the original method name
+            # is `TakeSnapshot()`, the inferred response type is
+            # `TakeSnapshotResponse`.
+          "a_key": "", # Properties of the object. Contains field @type with type URL.
+        },
+        "name": "A String", # The server-assigned name, which is only unique within the same service that
+            # originally returns it. If you use the default HTTP mapping, the
+            # `name` should be a resource name ending with `operations/{unique_id}`.
+        "metadata": { # Service-specific metadata associated with the operation.  It typically
+            # contains progress information and common metadata such as create time.
+            # Some services might not provide such metadata.  Any method that returns a
+            # long-running operation should document the metadata type, if any.
+          "a_key": "", # Properties of the object. Contains field @type with type URL.
+        },
       },
     ],
+    "nextPageToken": "A String", # The standard List next-page token.
   }</pre>
 </div>