ContentNegotiationResult
Represents the result of content negotiation performed using <see cref="M:System.Net.Http.Formatting.IContentNegotiator.Negotiate(System.Type,System.Net.Http.HttpRequestMessage,System.Collections.Generic.IEnumerable{System.Net.Http.Formatting.MediaTypeFormatter})" />
The formatter chosen for serialization.
The media type that is associated with the formatter chosen for serialization. Can be null.
Create the content negotiation result object.