@Override
      public void beforeCompletion() {
        try {
          utx.setRollbackOnly();
        } catch (Exception se) {
          fail("Set Roll Back only caused failure.Exception =" + se);
        }
      }
Test TransactionManagerImpl methods not tested by UserTransactionImplTest
geode-core/src/integrationTest/java/org/apache/geode/internal/jta/TransactionManagerImplJUnitTest.java