code: function (sector, imageWidth, imageHeight) {
              if (!sector) {
                  throw new ArgumentError(
                      Logger.logMessage(Logger.LEVEL_SEVERE, "ElevationImage", "constructor", "missingSector"));
              }
  
              /**
               * The sector spanned by this elevation image.
               * @type {Sector}
               * @readonly
               */
              this.sector = sector;
  
              /**
               * The number of longitudinal sample points in this elevation image.
               * @type {Number}
               * @readonly
               */
              this.imageWidth = imageWidth;
  
              /**
               * The number of latitudinal sample points in this elevation image.
               * @type {Number}
               * @readonly
               */
              this.imageHeight = imageHeight;
  
              /**
               * The size in bytes of this elevation image.
               * @type {number}
               * @readonly
               */
              this.size = this.imageWidth * this.imageHeight;
  
              /**
               * Internal use only
               * false if the entire image consists of NO_DATA values, true otherwise.
               * @ignore
               */
              this.hasData = true;
  
              /**
               * Internal use only
               * true if any pixel in the image has a NO_DATA value, false otherwise.
               * @ignore
               */
              this.hasMissingData = false;
          }
docs: Constructs an elevation image.
  @alias ElevationImage
  @constructor
  @classdesc Holds elevation values for an elevation tile.
  This class is typically not used directly by applications.
  @param {Sector} sector The sector spanned by this elevation image.
  @param {Number} imageWidth The number of longitudinal sample points in this elevation image.
  @param {Number} imageHeight The number of latitudinal sample points in this elevation image.
  @throws {ArgumentError} If the sector is null or undefined