*
     * @since 4.2
     */
    long getNotificationOperationFinishedTimestamp();

    /**
     * A structured object providing details about the operation that was performed.
     */
    Object getNotificationOperationDetails();

    /**
     * A structured object representing the outcome of the operation.
     * Null if the operation failed, or if no result details are produced for the type of operation.
     */

     *
     * @since 4.2
     */
    long getNotificationOperationStartedTimestamp();

    /**
     * A structured object providing details about the operation to be performed.
     */
    Object getNotificationOperationDetails();

    BuildOperationStartedNotification startedNotification(Class<?> detailsClazz) {
        BuildOperationStartedNotification buildOperationStartedNotification = Mock()
        1 * buildOperationStartedNotification.getNotificationOperationDetails() >> new Object().withTraits(detailsClazz)
        buildOperationStartedNotification
    }

    static trait EmptyDetails {}

    static trait SimpleDetails {

                @Override
                void started($BuildOperationStartedNotification.name notification) {
                    verify(notification.getNotificationOperationDetails(), 'Details')
                }

                @Override
                void progress($BuildOperationProgressNotification.name notification) {