Example on Page QML documentation does not work, Cannot assign to non-existent property "head"

[Stuart Langridge]

https://developer.ubuntu.com/api/apps/qml/sdk-14.10/Ubuntu.Components.Page/ gives, as its example for how to use a Page, this QML:

import QtQuick 2.0
import Ubuntu.Components 1.1
MainView {
    width: units.gu(48)
    height: units.gu(60)
    Page {
        title: i18n.tr("Example page")
        Label {
            anchors.centerIn: parent
            text: i18n.tr("Hello world!")
        }
        head.actions: [
            Action {
                iconName: "search"
                text: i18n.tr("Search")
            },
            Action {
                iconName: "contacts"
                text: i18n.tr("Contacts")
            }
        ]
    }
}

Putting that in a file and running it gives an error:

$ qmlscene ~/Scratch/headactions.qml
file:///home/aquarius/Scratch/headactions.qml:12 Cannot assign to non-existent property "head"

This means that I do not understand how to use header actions in a Page at all.