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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 replies(self):
 """Return a list of the comment replies to this comment. If the comment is not from a submission, :meth:`replies` will always be an empty list unless you call :meth:`refresh() before calling :meth:`replies` due to a limitation in reddit's API. """

        if self._replies is None or not self._has_fetched_replies:
            response = self.reddit_session.request_json(self._fast_permalink)
            if response[1]['data']['children']:
                # pylint: disable=W0212
                self._replies = response[1]['data']['children'][0]._replies
            else:
                # comment is "specially deleted", a reddit inconsistency;
                # see #519, #524, #535, #537, and #552 it needs to be
                # retreived via /api/info, but that's okay since these
                # specially deleted comments always have the same json
                # structure.
                msg = ("Comment {0} was deleted or removed, and had "
                       "no replies when such happened, so it still "
                       "has no replies".format(self.name))
                warn(msg, RuntimeWarning)
                self._replies = []
            # pylint: enable=W0212
            self._has_fetched_replies = True
            # Set the submission object if it is not set.
            if not self._submission:
                self._submission = response[0]['data']['children'][0]
        return self._replies