@Override
  public final void preTearDown() throws Exception {
    Host host = Host.getHost(0);
    VM vm0 = host.getVM(0);
    vm0.invoke(TxnTimeOutDUnitTest::closeCache);
  }
This test sees if the TransactionTimeOut works properly
geode-core/src/distributedTest/java/org/apache/geode/internal/jta/dunit/TxnTimeOutDUnitTest.java