Fix function name

Author: tatevikg1

src/Subscription/Service/SubscriberService.php

@@ -35,7 +35,7 @@ public function updateSubscriber(UpdateSubscriberRequest $updateSubscriberReques
 
     public function getSubscriber(int $subscriberId): array
     {
-        $subscriber = $this->subscriberManager->getSubscriber($subscriberId);
+        $subscriber = $this->subscriberManager->getSubscriberById($subscriberId);
         return $this->subscriberNormalizer->normalize($subscriber);
     }
 

tests/Unit/Subscription/Service/SubscriberServiceTest.php

@@ -97,7 +97,7 @@ public function testGetSubscriberReturnsNormalizedSubscriber(): void
         $expectedResult = ['id' => 1, 'email' => '[email protected]'];
 
         $this->subscriberManager->expects($this->once())
-            ->method('getSubscriber')
+            ->method('getSubscriberById')
             ->with($subscriberId)
             ->willReturn($subscriber);