* </span>
*/
private ERXMutableInteger _incrementReferenceCounterForKey(String key) {
ERXMutableInteger count = (ERXMutableInteger)_referenceCounters().objectForKey(key);
if (count != null)
count.increment();
else {
count = new ERXMutableInteger(1);
_referenceCounters().setObjectForKey(count, key);
}
if (log.isDebugEnabled())