@Override
  public boolean removeGatewayReceiverServer(InternalCacheServer receiverServer) {
    boolean removed = gatewayReceiverServer.compareAndSet(receiverServer, null);
    sendRemoveCacheServerProfileMessage();
    return removed;
  }
For use by unit tests to inject a mocked ccpTimer
geode-core/src/main/java/org/apache/geode/internal/cache/GemFireCacheImpl.java