@Override
  public void incrementRecentlyUsed() {
    // nothing
  }
Return the Entry that is considered most recently used and available to be evicted to overflow.
Note that this implementation basically just returns the most recent thing added to the list.
So, unlike the parent class, is does no scanning based on the recentlyUsed bit. This is a
perfect implementation for our queues (gateway, client subscription) as long as they never
update something already in the queue. Since updates simply set the recentlyUsed bit then the
most recent node may be the one that was just updated and not moved to the tail of the list.
geode-core/src/main/java/org/apache/geode/internal/cache/eviction/LIFOList.java