@SuppressWarnings("unused") // do not delete
  public Set<TXId> getScheduledToBeRemovedTx() {
    final TXManagerImpl txMgr = (TXManagerImpl) cache.getCacheTransactionManager();
    return txMgr.getScheduledToBeRemovedTx();
  }
provide a test hook to track client transactions to be removed
geode-core/src/main/java/org/apache/geode/internal/cache/tier/sockets/ClientHealthMonitor.java