ListModel's documentation mentions nothing about nesting ListElements

ListModel {
        id: alarmModel

        ListElement {
            hour: 6
            minute: 0
            day: 2
            month: 8
            year: 2018
            activated: true
            label: "Wake up"
            daysToRepeat: [
                ListElement { dayOfWeek: 0; repeat: false },
                ListElement { dayOfWeek: 1; repeat: false },
                ListElement { dayOfWeek: 2; repeat: false },
                ListElement { dayOfWeek: 3; repeat: false },
                ListElement { dayOfWeek: 4; repeat: false },
                ListElement { dayOfWeek: 5; repeat: false },
                ListElement { dayOfWeek: 6; repeat: false }
            ]
        }

        // ...
}