Is there a way to hide markers generated at directions layer ? I'd like to draw only route. Or is there a way to set custom icon instead of build ones ?

According to docs:

https://developer.mapquest.com/documentation/mapquest-js/v1.3/l-mapquest-directions-layer/

I can only change style of start-marker / end-marker, but I don't want it at all.

Or maybe there is a way to extend directionLayer, and somehow override markers ?