如何在QML中隐藏TabBar中的TabButton

import QtQuick 2.0
import QtQuick.Controls 2.0

TabBar {
    id: tabBar
    width: parent.width
    height: 40

    TabButton {
        text: "Tab 1"
    }

    TabButton {
        text: "Tab 2"
    }

    TabButton {
        text: "Tab 3"
    }

    // 隐藏TabButton
    Component.onCompleted: {
        for (var i = 0; i < tabBar.contentItem.children.length; i++) {
            tabBar.contentItem.children[i].visible = false;
        }
    }
}