private void postWait() {
    waiting = false;
    removeListener();
    final DistributionManager mgr = getDistributionManager();
    mgr.getStats().endReplyWait(statStart, initTime);
    mgr.getCancelCriterion().checkCancelInProgress(null);
  }
perform initial membership processing while under synchronization of this.members

@param activeMembers the DM's current membership set
geode-core/src/main/java/org/apache/geode/distributed/internal/ReplyProcessor21.java