NotificationPane.kt

class QueryFragment : Fragment() {
    val name = SimpleStringProperty("Default")
    val error = SimpleStringProperty("Wow")
    var query: TextArea by singleAssign()
    var errorPane: NotificationPane by singleAssign()
    var button: Button by singleAssign()
    override val root = vbox {
        form {
            fieldset {
                field("Name") {
                    textfield(name)
                }
            }

        }
        errorPane = notificationPane {}
        add(errorPane)

        query = textarea("SELECT ?s ?p ?o WHERE { ?s ?p ?o. } LIMIT 1") {

        }

        button = button("Run Query") {}


        errorPane.text = "Foajlslausl"
        errorPane.show()
    }


}