Returns a RangeFormat instance with the format of this range

def get_format(self):
        """ Returns a RangeFormat instance with the format of this range """
        url = self.build_url(self._endpoints.get('get_format'))
        response = self.session.get(url)
        if not response:
            return None
        return self.range_format_constructor(parent=self, **{self._cloud_data_key: response.json()})