@Override
  public GatewaySender getGatewaySender(String id) {
    for (GatewaySender sender : allGatewaySenders) {
      if (sender.getId().equals(id)) {
        return sender;
      }
    }
    return null;
  }
For use by unit tests to inject a mocked ccpTimer
geode-core/src/main/java/org/apache/geode/internal/cache/GemFireCacheImpl.java