docs: def create_review_comment(self, body, commit_id, path, position):
          """
          :calls: `POST /repos/:owner/:repo/pulls/:number/comments <http://developer.github.com/v3/pulls/comments>`_
          :param body: string
          :param commit_id: :class:`github.Commit.Commit`
          :param path: string
          :param position: integer
          :rtype: :class:`github.PullRequestComment.PullRequestComment`
          """
          assert isinstance(body, (str, unicode)), body
          assert isinstance(commit_id, github.Commit.Commit), commit_id
          assert isinstance(path, (str, unicode)), path
          assert isinstance(position, (int, long)), position
          post_parameters = {
              "body": body,
              "commit_id": commit_id._identity,
              "path": path,
              "position": position,
          }
          headers, data = self._requester.requestJsonAndCheck(
              "POST",
              self.url + "/comments",
              input=post_parameters
          )
          return github.PullRequestComment.PullRequestComment(self._requester, headers, data, completed=True)