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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:
 async def get_response(self, message=None, *, timeout=None):
 """ Returns a coroutine that will resolve once a response arrives. Args: message (`Message <telethon.tl.custom.message.Message>` | `int`, optional):
 The message (or the message ID) for which a response is expected. By default this is the last sent message. timeout (`int` | `float`, optional):
 If present, this `timeout` (in seconds) will override the per-action timeout defined for the conversation. """

        return await self._get_message(
            message, self._response_indices, self._pending_responses, timeout,
            lambda x, y: True
        )