ApiPlatform\Core\Bridge\Doctrine\Orm\Filter\AbstractFilter::isPropertyEnabled PHP 메소드

    protected function isPropertyEnabled(string $property) : bool
    {
        if (null === $this->properties) {
            // to ensure sanity, nested properties must still be explicitly enabled
            return !$this->isPropertyNested($property);
        }
        return array_key_exists($property, $this->properties);
    }