def comment(self, comment):
if isinstance(comment, six.string_types):<EOL><INDENT>comment = self._pump.Comment(comment)<EOL><DEDENT>comment.in_reply_to = self<EOL>comment.send()<EOL>
Add a :class:`Comment <pypump.models.comment.Comment>`
        to the object.

        :param comment: A :class:`Comment <pypump.models.comment.Comment>`
            instance, text content is also accepted.

        Example:
            >>> anote.comment(pump.Comment('I agree!'))