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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def scroll_up(self, locator):

 """Scrolls up to element"""

        driver = self._current_application()
        element = self._element_find(locator, True, True)
        driver.execute_script("mobile: scroll", {"direction": 'up', 'element': element.id})