Bug 2941: Remove forward declarations of QModelIndex and #include <QModelIndex.h>. The QList template argument needs the full declaration of QModelIndex.
<layers>
<visual>
<param name="translation_x" type="anim">
<duration>0.4</duration>
<style>linear</style>
<keyframe at="0">0</keyframe>
<keyframe at="1">1</keyframe>
<start ref="visual.right">1</start>
<end ref="visual.left">1</end>
</param>
</visual>
</layers>