# File lib/selenium/webdriver/common/action_builder.rb, line 61
      def move_to(element, down_by = nil, right_by = nil)
        if down_by && right_by
          @actions << [:mouse, :move_to, element, down_by, right_by]
        else
          @actions << [:mouse, :move_to, element]
        end

        self
      end