如何在qml中给出行元素内部的自定义间距

import QtQuick 2.0
import QtQuick.Layouts 1.3

Item {
    width: 200
    height: 100

    ColumnLayout {
        anchors.fill: parent
        spacing: 10 // 设置行元素之间的间距

        Rectangle {
            width: parent.width
            height: 30
            color: "red"
        }

        Rectangle {
            width: parent.width
            height: 30
            color: "green"
        }

        Rectangle {
            width: parent.width
            height: 30
            color: "blue"
        }
    }
}