@Override
            public Object load(LoaderHelper helper) {
              remoteLoaderInvoked = true;
              remoteLoaderInvokedCount++;
              return null;
            }
Confirm that a netLoad that returns null will NOT allow other netLoad methods to be called.
geode-core/src/distributedTest/java/org/apache/geode/cache30/SearchAndLoadDUnitTest.java