枚举器组当前占用状态 protected bool m_enumStates
如果一个组中的所有端点的所有令牌都已分配出去，那么仲裁流请求将储存在一个fifo队列中，直至有令牌转变成未占用状态。
IF all tokens of all endpoints in the group are assigned, the mediation flow request is stored in a FIFO queue until a token becomes free.
保留到反射对象的引用会造成这些类保持为活动状态并继续占用空间。
Holding references to the reflecting objects causes these classes to stay alive and continue occupying space.
服务器内存占用减少了，因为保持请求级别状态只需较少的对象。
Server memory footprint is reduced because there are fewer objects needed to maintain request level state.
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