public void FindAntwoordCorrect()
        {
            var quizDTO = new QuizDTO
            {
                Id   = 1,
                Naam = "Quiz 1"
            };

            var response = new Response <QuizDTO> {
                DTO = quizDTO
            };

            //Arrange
            quizService.Setup(x => x.FindQuiz(1)).Returns(response);

            //Act
            var foundQuiz = controller.GetById(1) as ObjectResult;
            var entity    = foundQuiz.Value as QuizViewModelResponse;

            //Assert
            Assert.That(entity.Id, Is.EqualTo(quizDTO.Id));
            Assert.That(entity.Naam, Is.EqualTo(quizDTO.Naam));
        }