public synchronized Collection<Map.Entry<K, V>> getAll() {
        return new ArrayList<Map.Entry<K, V>>(this.map.entrySet());
    }
Returns a <code>Collection</code> that contains a copy of all cache
entries.

@return a <code>Collection</code> with a copy of the cache content.
jme3-terrain/src/main/java/com/jme3/terrain/geomipmap/LRUCache.java