MONO_API MonoObject *
mono_object_clone (MonoObject *obj);
+MONO_RT_EXTERNAL_ONLY
MONO_API MonoObject *
mono_object_isinst (MonoObject *obj, MonoClass *klass);
+MONO_RT_EXTERNAL_ONLY
MONO_API MonoObject *
mono_object_isinst_mbyref (MonoObject *obj, MonoClass *klass);