docs: public static void enable() {
          final MetaClassRegistry metaClassRegistry = GroovySystem.getMetaClassRegistry();
          synchronized (metaClassRegistry) {
              if (metaClassRegistry.getMetaClassCreationHandler() != instance) {
                  ClassInfo.clearModifiedExpandos();
                  metaClassRegistry.setMetaClassCreationHandle(instance);
              }
          }
      }