ItemParticle give() method body not implemented

I was trying to use the ItemParticle item and the give() method but nothing seem to work. Checking the source I discovered with surprise that the current status of this call is the following (source here):

void QQuickItemParticle::give(QQuickItem *item)
{
 //TODO: This
 Q_UNUSED(item);
}

How is possible? A officially documented method not developed yet?