/** Use this if you want to build and compile just the one asset. */
  public ContentPackageAssembler(AssetItem assetToBuild) {
    this.pkg = assetToBuild.getPackage();
    createBuilder();

    if (preparePackage()) {
      buildAsset(assetToBuild);
    }
  }
  /**
   * @param assetPackage The package.
   * @param compile true if we want to build it. False and its just for looking at source.
   */
  public ContentPackageAssembler(
      PackageItem assetPackage, boolean compile, String selectorConfigName) {
    this.pkg = assetPackage;
    this.selectorConfigName = selectorConfigName;
    createBuilder();

    if (compile && preparePackage()) {
      buildPackage();
    }
  }