docs: public static long longValue(String key, long defaultValue) {
  		String value = System.getProperty(key);
  		long longValue = defaultValue;
  
  		if (value != null) {
  			try {
  				longValue = Long.parseLong(value);
  			} catch (NumberFormatException e) {
  				LOG.warning(e, "Ignoring invalid long system propert: ''{0}'' = ''{1}''", key, value);
  			}
  		}
  		return longValue;
  	}