static MGVTBL mouse_util_type_constraints_vtbl; /* not used, only for identity */
CV*
-generate_isa_predicate_for(pTHX_ SV* const klass, const char* const predicate_name){
+mouse_generate_isa_predicate_for(pTHX_ SV* const klass, const char* const predicate_name){
STRLEN klass_len;
const char* klass_pv = SvPV_const(klass, klass_len);
CV* xsub;