@Override
      public Object call() throws Exception {
        assertFalse(basicGetCache().isClosed());
        Region<Object, Object> region = getCache().getRegion("region");
        return region.get(0);
      }
A simple test case that we are actually persisting with a PR.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/InterruptsDUnitTest.java