httpcontext.getowincontext().authentication.signout redirect code example
Example: HttpContext.GetOwinContext().Authentication.SignOut
Request.GetOwinContext().Authentication.SignOut();
Request.GetOwinContext().Authentication.SignOut(Microsoft.AspNet.Identity.DefaultAuthenticationTypes.ApplicationCookie);
HttpContext.Current.GetOwinContext().Authentication.SignOut(Microsoft.AspNet.Identity.DefaultAuthenticationTypes.ApplicationCookie);