protected override void ConfigureAuthentication(IPipelines pipelines)
 {
     pipelines.EnableJwtStatelessAuthentication(
         ctx => ctx
         .GetOwinEnvironment()
         .ContainsKey(Configuration.Authentication.ClaimsPrincipalResourceName)
                 ? ctx.GetOwinEnvironment()
         [Configuration.Authentication
          .ClaimsPrincipalResourceName] as ClaimsPrincipal
                 : null,
         Logger);
 }