code: function PBRSpecularGlossinessMaterial(name, scene) {
              var _this = _super.call(this, name, scene) || this;
              _this._useMicroSurfaceFromReflectivityMapAlpha = true;
              return _this;
          }
docs: Instantiates a new PBRSpecularGlossinessMaterial instance.
  
  @param name The material name
  @param scene The scene the material will be use in.