FolderListModel fails to introspect "qrc" files

import QtQuick 2.2
import QtQuick.Controls 1.1
import Qt.labs.folderlistmodel 2.1

ApplicationWindow {
    visible: true
    width: 640
    height: 480

    ListView {
        id: view
        anchors.fill: parent
        width: 400
        height: 400

        model: FolderListModel {
            id: folderModel
            nameFilters: ["*.txt"]
            folder: "qrc:///kk"
        }

        delegate: Component {
            id: fileDelegate
            Rectangle {
                width: view.width
                height: 60
                Text {
                    anchors.centerIn: parent
                    text: fileName
                }
            }
        }
    }
}