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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_pagination(self, page_num=None, page_size=None):
 """ Handle retrieving and processing the next page of results. """

        self._response_json = self.get_next_page(page_num=page_num, page_size=page_size)
        self.update_attrs()
        self.position = 0
        self.values = self.process_page()