code: function constructLevels(options) {
          var levels = [];
          for(var i = 0; i < options.sizes.length; i++) {
              levels.push({
                  url: options['@id'] + '/full/' + options.sizes[i].width + ',/0/default.' + options.tileFormat,
                  width: options.sizes[i].width,
                  height: options.sizes[i].height
              });
          }
          return levels.sort(function(a, b) {
              return a.width - b.width;
          });
      }
docs: Build the legacy pyramid URLs (one tile per level)
  @function
  @param {object} options - infoJson
  @throws {Error}