<?php
public function setParameter(string $key, string $value): static;

<?php

namespace App\Model;

use Symfony\Component\Validator\Constraints as Assert;
use Symfony\Component\Validator\Context\ExecutionContextInterface;

class Dummy
{
    
    #[Assert\Callback]
    public function assertTestFails(ExecutionContextInterface $context)
    {
        $context->buildViolation('test_message')
            ->setParameter('name', 'Test')
            ->setParameter('date', new \DateTimeImmutable())
            ->addViolation()
        ;
    }

    #[Assert\Callback]
    public function assertTestWorks(ExecutionContextInterface $context)
    {
        $context->buildViolation('test_message')
            ->setParameters([
                'name' => 'Test',
                'date' => new \DateTimeImmutable(),
            ])
            ->addViolation()
        ;
    }
}