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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 _handle_page_args(self, rison_args):
 """ Helper function to handle rison page arguments, sets defaults and impose FAB_API_MAX_PAGE_SIZE :param rison_args: :return: (tuple) page, page_size """

        page = rison_args.get(API_PAGE_INDEX_RIS_KEY, 0)
        page_size = rison_args.get(API_PAGE_SIZE_RIS_KEY, self.page_size)
        return self._sanitize_page_args(page, page_size)