def OptParam(self, _parent=None):
        _context = self.Context(_parent, self._scanner, 'OptParam', [])
        if self._peek('ATTR', '":"', 'PLUS', 'STAR', 'QUEST', 'STR', 'ID', 'LP', 'LB', 'STMT', 'OR', 'RP', 'RB', '"rule"', 'EOF', context=_context) == 'ATTR':
            ATTR = self._scan('ATTR', context=_context)
            return ATTR[2:-2]
        return ''
dataset/ETHPy150Open smurfix/yapps/yapps/grammar.py/ParserDescription.OptParam/original