def create_git_tag(self, tag, message, object, type, tagger=github.GithubObject.NotSet):
        """
        :calls: `POST /repos/:owner/:repo/git/tags <http://developer.github.com/v3/git/tags>`_
        :param tag: string
        :param message: string
        :param object: string
        :param type: string
        :param tagger: :class:`github.InputGitAuthor.InputGitAuthor`
        :rtype: :class:`github.GitTag.GitTag`
        """
        assert isinstance(tag, (str, unicode)), tag
        assert isinstance(message, (str, unicode)), message
        assert isinstance(object, (str, unicode)), object
        assert isinstance(type, (str, unicode)), type
        assert tagger is github.GithubObject.NotSet or isinstance(tagger, github.InputGitAuthor), tagger
        post_parameters = {
            "tag": tag,
            "message": message,
            "object": object,
            "type": type,
        }
        if tagger is not github.GithubObject.NotSet:
            post_parameters["tagger"] = tagger._identity
        headers, data = self._requester.requestJsonAndCheck(
            "POST",
            self.url + "/git/tags",
            input=post_parameters
        )
        return github.GitTag.GitTag(self._requester, headers, data, completed=True)
:calls: `POST /repos/:owner/:repo/git/tags <http://developer.github.com/v3/git/tags>`_
        :param tag: string
        :param message: string
        :param object: string
        :param type: string
        :param tagger: :class:`github.InputGitAuthor.InputGitAuthor`
        :rtype: :class:`github.GitTag.GitTag`