code: def slug(self, language=None, fallback=True):
          
  
          slug = self.get_content(language, 'slug', language_fallback=fallback)
  
          return slug
docs: Return the slug of the page depending on the given language.
  
          :param language: wanted language, if not defined default is used.
          :param fallback: if ``True``, the slug will also be searched in other \
          languages.