code: @Override
  	public boolean isAvailable(final Object key, final Class<?> clas) {
  		this.logger.debug("@isAvailable :".concat(key.toString()).concat(" for class : ".concat(clas.toString())));
  		final Object Object = getCachableMap(clas).get(key);
  		if (Object == null) {
  			this.logger.debug("try to find it on the nullable cache");
  			this.logger.debug(getCachableMap(JKAbstractCacheManager.NULLABLE_MAP_CLASS).keySet().toString());
  			return getCachableMap(JKAbstractCacheManager.NULLABLE_MAP_CLASS).containsKey(key);
  		}
  		this.logger.debug("key ".concat(key.toString()).concat(Object != null ? " is available in the cache" : "is not svailable"));
  		return Object != null;
  	}
docs: /*
  (non-Javadoc)
  
  @see com.jk.cache.CacheManager#isAvailable(java.lang.String, java.lang.Class)