GroovyFX: factory methods for a composite view

MultipleButtonsDemo.groovy

import static groovyx.javafx.GroovyFX.start

/**
 Demo of using methods to create multiple nodes (here Buttons) as a composite view and use those
 factory methods multiple times.
 @author Dierk Koenig
 */

start {
    sgb = delegate

    stage title: 'Multiple Buttons', visible: true, {
        scene {
            hbox {
                threeVerticalButtons(sgb, 1, 4, 7)
                threeVerticalButtons(sgb, 2, 5, 8)
                threeVerticalButtons(sgb, 3, 6, 9)
            }
        }
    }
}

def threeVerticalButtons(sgb, l1, l2, l3) {
    sgb.vbox {
        button l1
        button l2
        button l3
    }
}