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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 next(self):
 """Return the next page. The page label is defined in ``settings.NEXT_LABEL``. Return an empty string if current page is the last. """

        if self._page.has_next():
            return self._endless_page(
                self._page.next_page_number(),
                label=settings.NEXT_LABEL)
        return ''