code: def section_by_title(
              self,
              title: str,
      ) -> Optional[WikipediaPageSection]:
          
          if not self._called['extracts']:
              self._fetch('extracts')
          return self._section_mapping.get(title)
docs: Returns section of the current page with given `title`.
  
          :param title: section title
          :return: :class:`WikipediaPageSection`