Stub.php

<?php

use Symfony\Component\Validator\Mapping\ClassMetadata;
use Symfony\Component\Validator\Constraints\NotBlank;
    
class Stub
{
    protected static $data = array();

    public function setData($data)
    {
        self::$data = $data;
    }

    public function __get($var)
    {
        return self::$data[$var]->getTmpClientValue();
    }

    public function __set($var, $val)
    {
        return self::$data[$var]->setTmpClientValue($val);
    }

    public static function loadValidatorMetadata(ClassMetadata $metadata)
    {
        foreach(self::$data as $id=>$element)
        {
            $metadata->addPropertyConstraint($id, new NotBlank());
        }
    }
}