code: def close_statement(self, connection_id, statement_id):
          
          request = requests_pb2.CloseStatementRequest()
          request.connection_id = connection_id
          request.statement_id = statement_id
  
          self._apply(request)
docs: Closes a statement.
  
          :param connection_id:
              ID of the current connection.
  
          :param statement_id:
              ID of the statement to close.