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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def close_statement(self, connection_id, statement_id):
 """Closes a statement. :param connection_id: ID of the current connection. :param statement_id: ID of the statement to close. """

        request = requests_pb2.CloseStatementRequest()
        request.connection_id = connection_id
        request.statement_id = statement_id

        self._apply(request)