private static void stageClear(String rname, VM whereOps) throws InterruptedException {
    regionOperationWait(regionLatch);
    LocalRegion r = (LocalRegion) cache.getRegion(rname);
    r.clear();
    whereOps.invoke(ClearTXLockingDUnitTest::releaseVerify);
  }
Wait to be notified and then execute the clear. Once the clear completes, notify waiter to
perform region verification.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/ClearTXLockingDUnitTest.java