How to register a BlockEntity?

[Wuntare]

public class BlockEntitiesManager {
    public static final DeferredRegister<BlockEntityType<?>> BLOCK_ENTITIES =
        DeferredRegister.create(ForgeRegistries.BLOCK_ENTITY_TYPES, Main.MODID);

    public static final RegistryObject<BlockEntityType<CreativeBlockE>> CREATIVE_BLOCK_E = BLOCK_ENTITIES.register("creative_blocke", () -> BlockEntityType.Builder.of());

    public static void register(IEventBus eventBus) {
        BLOCK_ENTITIES.register(eventBus);
    }
}

Builder cannot be resolved or is not a field