val contacts = SortedFilteredList<Contact>()

override val root = borderpane {
    top {
        toolbar {
            textfield {
                promptText = "Search"
                contacts.filterWhen(textProperty()) { q, contact ->
			        contact.name.toLowerCase().contains(q.toLowerCase())
                }
            }
        }
    }
    center {
        tableview(contacts) {
            column("Name", Contact::nameProperty)
        }
    }
}