docs: public boolean updatePattern(String id, CronPattern pattern) {
  		final Lock writeLock = lock.writeLock();
  		try {
  			writeLock.lock();
  			final int index = ids.indexOf(id);
  			if (index > -1) {
  				patterns.set(index, pattern);
  				return true;
  			}
  		} finally {
  			writeLock.unlock();
  		}
  		return false;
  	}