code: def get_gml_url(self, qi_type, band='B00'):
          
          band = band.split('/')[-1]
          return self.get_qi_url('MSK_{}_{}.gml'.format(qi_type, band))
docs: :param qi_type: type of quality indicator
          :type qi_type: str
          :param band: band name
          :type band: str
          :return: location of gml file on AWS
          :rtype: str