Metabor\Callback\SymfonyExpression::__invoke PHP Метод

    public function __invoke()
    {
        if (empty($this->keys)) {
            $values = array();
        } else {
            $args = func_get_args();
            $values = array_combine($this->keys, $args);
        }
        return $this->expressionLanguage->evaluate($this->getExpression(), $values);
    }