code: def _parse_title(self):
          
          command = LatexCommand(
              'title',
              {'name': 'short_title', 'required': False, 'bracket': '['},
              {'name': 'long_title', 'required': True, 'bracket': '{'})
          try:
              parsed = next(command.parse(self._tex))
          except StopIteration:
              self._logger.warning('lsstdoc has no title')
              self._title = None
              self._short_title = None
  
          self._title = parsed['long_title']
  
          try:
              self._short_title = parsed['short_title']
          except KeyError:
              self._logger.warning('lsstdoc has no short title')
              self._short_title = None
docs: Parse the title from TeX source.
  
          Sets these attributes:
  
          - ``_title``
          - ``_short_title``