/wro4j-core/src/main/java/ro/isdc/wro/cache/support/AbstractSynchronizedCacheStrategyDecorator.java
if ( value == null) {   debug( "Cache is empty. Loading new ") ;   value = loadValue( key) ;   put( key, value) ; }
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} if (value == null) { lock.writeLock().lock(); try { value = getDecoratedObject().get(key); if (value == null) { <extra_id_0> value = loadValue(key); put(key, value); } } finally { lock.writeLock().unlock(); }