Ch 7 - vGrow and hGrow shorthand extension properties are vgrow and hgrow respectively

[abmyii]

In Ch 7. this example is given:

You can use a shorthand extension property for vGrow without calling vboxConstraints().

vbox {
    button("Button 1") {
           vGrow = Priority.ALWAYS
    }
    button("Button 2")
}

The shorthand extension property is vgrow (without a capital G), and the same applies to hGrow and hgrow.