code: def send_rpc(self, name, rpc_id, payload, timeout=1.0):
          
  
          return self._loop.run_coroutine(self._client.send_rpc(name, rpc_id, payload, timeout))
docs: Send an RPC to a service and synchronously wait for the response.
  
          Args:
              name (str): The short name of the service to send the RPC to
              rpc_id (int): The id of the RPC we want to call
              payload (bytes): Any binary arguments that we want to send
              timeout (float): The number of seconds to wait for the RPC to finish
                  before timing out and returning
  
          Returns:
              dict: A response dictionary with 1 or 2 keys set
                  'result': one of 'success', 'service_not_found',
                      or 'rpc_not_found', 'timeout'
                  'response': the binary response object if the RPC was successful