code: def drag_and_drop(self, source, target):
          
          self.click_and_hold(source)
          self.release(target)
          return self
docs: Holds down the left mouse button on the source element,
             then moves to the target element and releases the mouse button.
  
          :Args:
           - source: The element to mouse down.
           - target: The element to mouse up.