code: def get_preview_url(self, data_type='L1C'):
          
          if self.data_source is DataSource.SENTINEL2_L1C or self.safe_type is EsaSafeType.OLD_TYPE:
              return self.get_url(AwsConstants.PREVIEW_JP2)
          return self.get_qi_url('{}_PVI.jp2'.format(data_type))
docs: Returns url location of full resolution L1C preview
          :return: