@Override
      public void run2() throws CacheException {
        LocalRegion region = (LocalRegion) getRootRegion().getSubregion(regionName);
        Map eventState = region.getEventState();
        assertEquals(1, eventState.size());
      }
Tests adding threads to an <code>EventTracker</code>.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/event/EventTrackerDUnitTest.java