Java mode only:Users can specify nodes to be of class Object. This type is coarser
than all other types, and all types are compatible with it. end Java mode.
C mode only:Users can specify nodes to be of class ANY. This type is coarser
than all other types, and all types are compatible with it. If AST-mode is
used, also the type tTree can be used, which is equivalent.end C mode.