alt/error_virtual_type2_alt6.nit:40,17--26: Redef Error: Wrong bound type. Found G[Discrete], expected a subtype of G[T], as in error_virtual_type2_alt6#A#GT.
alt/error_virtual_type2_alt6.nit:41,2--22: Error: A property GT is already defined in class B at line 39.