registry_getnullclass  177 lib/as3/registry.h classinfo_t* registry_getnullclass();
registry_getnullclass  225 lib/as3/registry.h #define TYPE_NULL            registry_getnullclass()
registry_getnullclass  226 lib/as3/registry.h #define TYPE_IS_NULL(t)      ((t) == registry_getnullclass())