def drag_and_drop_by(right_by, down_by)
      element_call(:wait_for_present) do
        driver.action
              .drag_and_drop_by(@element, right_by, down_by)
              .perform
      end
    end
def drag_and_drop_by(right_by, down_by)
      element_call(:wait_for_present) do
        driver.action
              .drag_and_drop_by(@element, right_by, down_by)
              .perform
      end
    end
Drag and drop this element by the given offsets.
 Note that browser support may vary.

 @example
   browser.div(id: "draggable").drag_and_drop_by 100, -200

 @param [Integer] right_by
 @param [Integer] down_by