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       - Enclosing class:
- Flow
 
 
 public static interface Flow.Subscription
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             方法详细信息-  requestvoid request(long n) 将给定数量的n项目添加到此订阅的当前未实现的需求中。 如果n小于或等于零,则订户将收到onError信号与IllegalArgumentException参数。 否则,订阅者最多可以收到n额外的onNext调用(如果终止则更少)。- 参数
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              n- 需求增量 价值Long.MAX_VALUE可能被视为有效无限
 
 -  cancelvoid cancel() Causes the Subscriber to (eventually) stop receiving messages. Implementation is best-effort -- additional messages may be received after invoking this method. A cancelled subscription need not ever receive anonCompleteoronErrorsignal.
 
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