[Validator] Add the type for ConstraintValidatorTestCase::createValidator

Author: stof

Tests/Validator/Constraints/UserPasswordValidatorTest.php

@@ -18,6 +18,7 @@
 use Symfony\Component\Security\Core\User\UserInterface;
 use Symfony\Component\Security\Core\Validator\Constraints\UserPassword;
 use Symfony\Component\Security\Core\Validator\Constraints\UserPasswordValidator;
+use Symfony\Component\Validator\ConstraintValidatorInterface;
 use Symfony\Component\Validator\Exception\ConstraintDefinitionException;
 use Symfony\Component\Validator\Test\ConstraintValidatorTestCase;
 
@@ -44,7 +45,7 @@ abstract class UserPasswordValidatorTest extends ConstraintValidatorTestCase
      */
     protected $hasherFactory;
 
-    protected function createValidator()
+    protected function createValidator(): ConstraintValidatorInterface
     {
         return new UserPasswordValidator($this->tokenStorage, $this->hasherFactory);
     }