Serialize an example

example.cs

        [Fact]
        public void ExampleObjectShouldBeSerializable()
        {
            // Arrange
            var response = new OpenApiResponse()
            {
                Content = new Dictionary<string, OpenApiMediaType>
                {
                    ["application/json"] = new OpenApiMediaType
                    {
                        Example = new OpenApiObject()
                        {
                            ["foo"] = new OpenApiString("hello"),
                            ["bar"] = new OpenApiInteger(1),
                        }
                    }
                }
            };
            var outputString = new StringWriter();
            var writer = new OpenApiJsonWriter(outputString);

            // Act
            writer.WriteAny(response.Content["application/json"].Example);

            var parsedObject = JObject.Parse(outputString.GetStringBuilder().ToString());
            var expectedObject = new JObject(
                        new JProperty("foo", "hello"),
                        new JProperty("bar", 1)
                    );

            // Assert
            parsedObject.ShouldBeEquivalentTo(expectedObject);
        }