docs: protected void fireConstantMetaClassUpdate(Object obj, Class c, final MetaClass oldMC, MetaClass newMc) {
          MetaClassRegistryChangeEventListener[]  listener = getMetaClassRegistryChangeEventListeners();
          MetaClassRegistryChangeEvent cmcu = new MetaClassRegistryChangeEvent(this, obj, c, oldMC, newMc);
          for (int i = 0; i<listener.length; i++) {
              listener[i].updateConstantMetaClass(cmcu);
          }
      }