A type which meets the requirements of __ConstBufferSequence__. This is the type of buffer returned by `W::get`.
A type which meets the requirements of __ConstBufferSequence__. This is the type of buffer returned by `W::get`.一种满足 __ConstBufferSequence__ 要求的类型。该类型是 `W::get` 返回的缓冲区类型。
A type which meets the requirements of __ConstBufferSequence__. This is the type of buffer returned by `W::get`.一种满足 __ConstBufferSequence__ 要求的类型。该类型是 `W::get` 返回的缓冲区类型。