@Override
        public void beforeDestroy2(EntryEvent event) throws CacheWriterException {
          Object beca = event.getCallbackArgument();
          assertThat(callbackArg).isEqualTo(beca);
        }
Tests that a {@link Region#localDestroy} is not propagated to the server and that a {@link
Region#destroy} is. Also makes sure that callback arguments are passed correctly.
geode-core/src/distributedTest/java/org/apache/geode/cache/ConnectionPoolDUnitTest.java