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