@After
  public void cleanUp() {
    File dir = new File(".");
    File[] files = dir.listFiles((dir1, name) -> name.startsWith("BACKUP"));
    for (File file : files) {
      file.delete();
    }
  }
Basic test of regions that use off heap storage. Subclasses exist for the different types of
offheap store.
geode-core/src/integrationTest/java/org/apache/geode/internal/offheap/OffHeapRegionBase.java