private Object createExpireEntryCallback(LocalRegion r, Object k) {
    return expireSendsEntryAsCallback ? getValueForCallback(r, k) : null;
  }
Returns the tasks region entry if it "checks" out. The check is to see if the region entry
still exists.

@throws EntryNotFoundException if the task no longer has a region entry or if the region entry
        it has is removed.
geode-core/src/main/java/org/apache/geode/internal/cache/EntryExpiryTask.java