@Override
  public final void postSetUp() throws java.lang.Exception {
    VM vm0 = Host.getHost(0).getVM(0);
    Object[] o = new Object[1];
    o[0] = "TxnManagerMultiThreadDUnitTest";
    Object tableName = vm0.invoke(TxnManagerMultiThreadDUnitTest.class, "init", o);
    // setting the table name using the CacheUtils method setTableName
    // This is to access the table name in test methods
    CacheUtils.setTableName(tableName.toString());
    // set the tableName in CacheUtils of remote VM
    o[0] = tableName;
    vm0.invoke(CacheUtils.class, "setTableName", o);
    // delete the rows which are inseted in CacheUtils.init by calling delRows
    // method
    vm0.invoke(TxnManagerMultiThreadDUnitTest::delRows);
  }
Return file as string and then modify the string accordingly **
geode-core/src/distributedTest/java/org/apache/geode/internal/jta/dunit/TxnManagerMultiThreadDUnitTest.java