ApiPlatform\Core\Bridge\Symfony\Validator\Metadata\Property\ValidatorPropertyMetadataFactory::isRequired PHP Method

    private function isRequired(Constraint $constraint) : bool
    {
        foreach (self::REQUIRED_CONSTRAINTS as $requiredConstraint) {
            if ($constraint instanceof $requiredConstraint) {
                return true;
            }
        }
        return false;
    }