code: def scroll(self, start_locator, end_locator):
          
          el1 = self._element_find(start_locator, True, True)
          el2 = self._element_find(end_locator, True, True)
          driver = self._current_application()
          driver.scroll(el1, el2)
docs: Scrolls from one element to another
          Key attributes for arbitrary elements are `id` and `name`. See
          `introduction` for details about locating elements.