/// <summary>
/// Gets the API versions declared by the controller.
/// </summary>
/// <param name="controllerDescriptor">The <see cref="HttpControllerDescriptor">controller</see> to evaluate.</param>
/// <returns>A <see cref="IReadOnlyList{T}">read-only list</see> of <see cref="ApiVersion">API versions</see>
/// declared by the controller.</returns>
/// <remarks>The declared API versions are constrainted to the versions declared explicitly by the specified controller.</remarks>
public static IReadOnlyList <ApiVersion> GetDeclaredApiVersions(this HttpControllerDescriptor controllerDescriptor) => controllerDescriptor.GetApiVersionModel().DeclaredApiVersions;
public static bool IsApiVersionNeutral(this HttpControllerDescriptor controllerDescriptor) => controllerDescriptor.GetApiVersionModel().IsApiVersionNeutral;
