Lw\Domain\Model\User\User::id PHP Method

    public function id()
    {
        return $this->userId;
    }

 /**
  * @test
  */
 public function itShouldRemoveWish()
 {
     $this->deleteWishService->execute(new DeleteWishRequest($this->dummyWish->id()->id(), $this->dummyUser->id()->id()));
     $this->assertNull($this->wishRepository->wishOfId($this->dummyWish->id()));
 }