private final String lifecycleId;

    /**
     * Creates a new exception to indicate that the specified lifecycle is unknown.
     *
     * @param lifecycleId The identifier of the lifecycle that could not be located, may be {@code null}.
     */
    public LifecycleNotFoundException(String lifecycleId) {
        super("Unknown lifecycle " + lifecycleId);
        this.lifecycleId = (lifecycleId != null) ? lifecycleId : "";
    }