//

    // Summary:

    //     Provides extension methods for System.Web.HttpContext.

    public static class HttpContextExtensions

    {

        //

        // Summary:

        //     Gets the Microsoft.Owin.IOwinContext for the current request.

        //

        // Parameters:

        //   context:

        public static IOwinContext GetOwinContext(this HttpContext context);

        //

        // Summary:

        //     Gets the Microsoft.Owin.IOwinContext for the current request.

        //

        // Parameters:

        //   request:

        public static IOwinContext GetOwinContext(this HttpRequest request);

    }

 HttpContext.Current.GetOwinContext();

            HttpContext.Current.Request.GetOwinContext();