Video.position is read-only / No way to seek

The property "position" of the QML "Video" element is read-only. However,

1) the documentation states that it is read-write: http://qt-project.org/doc/qt-5.0/qtmultimedia/qml-qtmultimedia5-video.html#position-prop
2) the example in the documentation uses it as read-write property
3) there is no other way to seek within the video

Therefore I think this is a bug and the "position" property should be read-write.