void Start()
 {
     _loader = new CADLoader.CADLoader(new List <IParser> {
         STPLoader.ParserFactory.Create(), STLLoader.ParserFactory.Create()
     });
 }
 void Start()
 {
     _loader = new CADLoader.CADLoader(new List<IParser> {STPLoader.ParserFactory.Create(), STLLoader.ParserFactory.Create()});
 }