def create_comment(self, body):
assert isinstance(body, (str, unicode)), body<EOL>post_parameters = {<EOL>"<STR_LIT:body>": body,<EOL>}<EOL>headers, data = self._requester.requestJsonAndCheck(<EOL>"<STR_LIT:POST>",<EOL>self.url + "<STR_LIT>",<EOL>input=post_parameters<EOL>)<EOL>return github.GistComment.GistComment(self._requester, headers, data, completed=True)<EOL>
:calls: `POST /gists/:gist_id/comments <http://developer.github.com/v3/gists/comments>`_
:param body: string
:rtype: :class:`github.GistComment.GistComment`