code: def scroll_forward_vertically(self, steps=10, *args, **selectors):
          
          return self.device(**selectors).scroll.vert.forward(steps=steps)
docs: Perform scroll forward (vertically)action on the object which has *selectors* attributes.
  
          Return whether the object can be Scroll or not.
  
          Example:
          | ${can_be_scroll} | Scroll Forward Vertically | className=android.widget.ListView       |                                   | # Scroll forward the UI object with class name |
          | ${can_be_scroll} | Scroll Forward Vertically | 100                                     | className=android.widget.ListView | # Scroll with steps |