Add some missing return types to internal/final classes

Author: nicolas-grekas

DataCollector/ValidatorDataCollector.php

@@ -65,31 +65,25 @@ public function lateCollect()
         }, 0);
     }
 
-    /**
-     * @return Data
-     */
-    public function getCalls()
+    public function getCalls(): Data
     {
         return $this->data['calls'];
     }
 
-    /**
-     * @return int
-     */
-    public function getViolationsCount()
+    public function getViolationsCount(): int
     {
         return $this->data['violations_count'];
     }
 
     /**
      * {@inheritdoc}
      */
-    public function getName()
+    public function getName(): string
     {
         return 'validator';
     }
 
-    protected function getCasters()
+    protected function getCasters(): array
     {
         return parent::getCasters() + [
             \Exception::class => function (\Exception $e, array $a, Stub $s) {

Test/ConstraintValidatorTestCase.php

@@ -25,6 +25,7 @@
 use Symfony\Component\Validator\ConstraintViolation;
 use Symfony\Component\Validator\ConstraintViolationInterface;
 use Symfony\Component\Validator\ConstraintViolationList;
+use Symfony\Component\Validator\ConstraintViolationListInterface;
 use Symfony\Component\Validator\Context\ExecutionContext;
 use Symfony\Component\Validator\Context\ExecutionContextInterface;
 use Symfony\Component\Validator\Mapping\ClassMetadata;
@@ -503,7 +504,7 @@ public function doValidatePropertyValue($objectOrClass, string $propertyName, $v
         return $this;
     }
 
-    public function getViolations()
+    public function getViolations(): ConstraintViolationListInterface
     {
     }