LengthConstraint.php

<?php

namespace Drupal\Core\Validation\Plugin\Validation\Constraint;

use Symfony\Component\Validator\Constraints\Length;

/**
 * Length constraint.
 *
 * Overrides the symfony constraint to use Drupal-style replacement patterns.
 *
 * @todo: Move this below the TypedData core component.
 *
 * @Constraint(
 *   id = "Length",
 *   label = @Translation("Length", context = "Validation"),
 *   type = { "string" }
 * )
 */
class LengthConstraint extends Length {
    public $maxMessage = 'This value is too long. It should have %limit character or less.|This value is too long. It should have %limit characters or less.';
    public $minMessage = 'This value is too short. It should have %limit character or more.|This value is too short. It should have %limit characters or more.';
    public $exactMessage = 'This value should have exactly %limit character.|This value should have exactly %limit characters.';
    
    /**
     * {@inheritdoc}
     */
    public function validatedBy() {
        return '\\Symfony\\Component\\Validator\\Constraints\\LengthValidator';
    }

}