Aerox handlebar lock

Hello, i have Yamaha Aerox 2002 with sport handlebar on it, but i cant find how to lock handlebar with keys, can you please help me is it possible to lock sport handlebar(wheel) with key on left side its trunk opening, on right its engine start, but how to lock handlebars?

 

Are they Yamaha sport handlebars or a different manufacturer?

 

Turn the bars to the left, push the key in and turn it to the left as you are pushing it in