@NotNull ISource<T> getSource()
Source block
@NotNull ITarget<T> getTarget()
Target block
@NotNull LinkOptions<T> getOptions()
Linking options
int getCount()
int getRest()
boolean getClosed()
Is closed
@NotNull Feedback offer(long id)
Notify event coming
Must notified by source. There is no need to specify the source or accept messages from other sources.
通知事件到来
必然由源来通知,不必再指定源,也不接受其他源的消息