OperationMetadata(mapping=None, *, ignore_unknown_fields=False, **kwargs)Represents the metadata of the long-running operation.
Attributes | 
      |
|---|---|
| Name | Description | 
create_time | 
        
          google.protobuf.timestamp_pb2.Timestamp
          Output only. The time the operation was created.  | 
      
end_time | 
        
          google.protobuf.timestamp_pb2.Timestamp
          Output only. The time the operation finished running.  | 
      
target | 
        
          str
          Output only. Server-defined resource path for the target of the operation.  | 
      
verb | 
        
          str
          Output only. Name of the verb executed by the operation.  | 
      
status_message | 
        
          str
          Output only. Human-readable status of the operation, if any.  | 
      
requested_cancellation | 
        
          bool
          Output only. Identifies whether the user has requested cancellation of the operation. Operations that have successfully been cancelled have [Operation.error][] value with a google.rpc.Status.code][google.rpc.Status.code] of
   1, corresponding to Code.CANCELLED.
         | 
      
api_version | 
        
          str
          Output only. API version used to start the operation.  |