Overload drawButtons method

I know it might be a dumb question, this is the description but I don't understand how to "overload" it
    /**
     \* Draw the touch buttons on the screen
     *
     \* overload this to change how buttons are drawn
     *
     \* @method drawButtons
     \* @for Q.InputSystem
     */
I also might need to overload touchControls, any ideas?
