-class Handle(TDataStd_RealList);
-class Handle(TDataStd_ExtStringList);
-class Handle(TDataStd_BooleanList);
-class Handle(TDataStd_IntegerList);
+class TDataStd_RealList;
+class TDataStd_ExtStringList;
+class TDataStd_BooleanList;
+class TDataStd_IntegerList;