code: function (serverAddress, pathToData) {
              /**
               * The server address.
               * @type {String}
               */
              this.serverAddress = serverAddress;
              if (!serverAddress || serverAddress.length === 0) {
                  this.serverAddress = WWUtil.currentUrlSansFilePart();
              }
  
              /**
               * The server-side path to the dataset.
               * @type {String}
               */
              this.pathToData = pathToData;
          }
docs: Constructs a URL builder for level/row/column tiles.
  @alias LevelRowColumnUrlBuilder
  @constructor
  @classdesc Provides a factory to create URLs for level/row/column tile REST requests.
  <p>
  URLs are formed by appending the specified server address with the specified path and appending
  a path of the form <em>/level/row/row_column.image-format</em>, where image-format is the corresponding
  suffix to the image mime type specified when a URL is requested. For example, if the specified server
  address is <em>https://worldwind32.arc.nasa.gov</em> and the specified path-to-data is
  <em>../standalonedata/Earth/BlueMarble256</em>, and the requested tile's level, row and column are 0, 5 and 9
  respectively, and the image format is <em>image/jpeg</em>, the composed URL is
  <em>https://worldwind32.arc.nasa.gov/standalonedata/Earth/BlueMarble256/0/5/5_9.jpg</em>.
  
  @param {String} serverAddress The server address. May be null, in which case the address is assumed to be
  the current location (see <code>window.location</code>) minus the last path component.
  @param {String} pathToData The path to the dataset on the server. May be null or empty to indicate that
  the data is directly relative to the specified server address.