public void ValidateDuplicateValueAnnotation()
        {
            EdmModel model = VocabularyTestModelBuilder.DuplicateValueAnnotationModel();

            Assert.AreEqual(2, model.VocabularyAnnotations.Count(), "Invalid count of annotation.");

            var expectedErrors = new EdmLibTestErrors()
            {
                { null, null, EdmErrorCode.DuplicateAnnotation }
            };

            this.VerifySemanticValidation(model, expectedErrors);
        }