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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 write(self, message):
 """Writes the given message up the wire. Does not expect a response back for the message. :param message: Message to write. """

        message.id = message.id or self.writer.next_message_id()

        if message.message_type in self.CALL_REQ_TYPES:
            message_factory = self.request_message_factory
        else:
            message_factory = self.response_message_factory

        fragments = message_factory.fragment(message)
        return self._write_fragments(fragments)