接口 Holder<T>

所有超级接口:
IHolderExtension<T>, IWithData<T>
所有已知实现类:
DeferredBlock, DeferredBlockBuilder, DeferredEntityTypeBuilder, DeferredHolder, DeferredItem, DeferredItemBuilder, Holder.Direct, Holder.Reference, RegistrySetBuilder.LazyHolder

public interface Holder<T> extends IHolderExtension<T>