code: public int[] getIntArray(final String key, final int[] def) {
  		try {
  			final int[] result = getIntArray(key);
  			return result != null ? result : def;
  		} catch (final NumberFormatException nfe) {
  			return def;
  		}
  	}
docs: Gets the prefixed key and parse it to an int[]<br>
  Each comma-separated list can be used. If the key couldn't get found, the
  default will be used.
  
  @param key
  the key
  @param def
  default value
  
  @return int[]