Sends a HEAD request. Returns :class:`Response` object.

        :param url: URL for the new :class:`Request` object.
        :param **kwargs: Optional arguments that ``request`` takes.

def head(self, url, **kwargs):
        """Sends a HEAD request. Returns :class:`Response` object.

        :param url: URL for the new :class:`Request` object.
        :param **kwargs: Optional arguments that ``request`` takes.
        """

        kwargs.setdefault('allow_redirects', True)
        return self.request('head', url, **kwargs)