Clear range values, format, fill, border, etc.
        :param str apply_to: Optional. Determines the type of clear action.
         The possible values are: all, formats, contents.

def clear(self, apply_to='all'):
        """
        Clear range values, format, fill, border, etc.
        :param str apply_to: Optional. Determines the type of clear action.
         The possible values are: all, formats, contents.
        """
        url = self.build_url(self._endpoints.get('clear_range'))
        return bool(self.session.post(url, data={'applyTo': apply_to.capitalize()}))