code: def parse_officials(self):
          
          # begin proper body of method
          lx_doc = self.html_doc()
          off_parser = opm(self.game_key.season)
          self.officials = off_parser(lx_doc)
  
          return self if self.officials else None
docs: Parse the officials
  
          :returns: ``self`` on success, ``None`` otherwise