protected function scanPyStringOp()
    {
        if (!$this->allowMultilineArguments) {
            return null;
        }

        if (false === ($pos = mb_strpos($this->line, '"""', 0, 'utf8'))) {
            return null;
        }

        $this->inPyString = !$this->inPyString;
        $token = $this->takeToken('PyStringOp');
        $this->pyStringSwallow = $pos;

        $this->consumeLine();

        return $token;
    }