code: function(type) {
        if (!type) {
          return null;
        }
        if (type.$$type == "Class") {
          return type;
        }
        if (type == "build") {
          return qx.tool.compiler.targets.BuildTarget;
        }
        if (type == "source") {
          return qx.tool.compiler.targets.SourceTarget;
        }
        if (type == "typescript") {
          throw new qx.tool.cli.Utils.UserError("Typescript targets are no longer supported - please use `typescript: true` in source target instead");
        }
        if (type) {
          var targetClass;
          if (type.indexOf(".") < 0) {
            targetClass = qx.Class.getByName("qx.tool.compiler.targets." + type);
          } else {
            targetClass = qx.Class.getByName(type);
          }
          return targetClass;
        }
        return null;
      }
docs: Resolves the target class instance from the type name; accepts "source" or "build" or
  a class name
  @param type {String}
  @returns {Maker}