public void afterFailedCommit2(TransactionEvent event) {
    String s = "Unexpected callback invocation";
    throw new UnsupportedOperationException(s);
  }
A <code>TransactionListener</code> used in testing. Its callback methods are implemented to throw
{@link UnsupportedOperationException} unless the user overrides the "2" methods.

@see #wasInvoked

@since GemFire 4.0
geode-core/src/distributedTest/java/org/apache/geode/cache30/TestTransactionListener.java