code: def next(self):
          
          if self._page.has_next():
              return self._endless_page(
                  self._page.next_page_number(),
                  label=settings.NEXT_LABEL)
          return ''
docs: Return the next page.
  
          The page label is defined in ``settings.NEXT_LABEL``.
          Return an empty string if current page is the last.