public void SerializeAdvanceContactAsYamlWorks(OpenApiSpecVersion version)
        {
            // Arrange
            var expected =
                @"name: API Support
url: http://www.example.com/support
email: [email protected]
x-internal-id: 42";

            // Act
            var actual = AdvanceContact.SerializeAsYaml(version);

            // Assert
            actual   = actual.MakeLineBreaksEnvironmentNeutral();
            expected = expected.MakeLineBreaksEnvironmentNeutral();
            actual.Should().Be(expected);
        }