How to define a valid OWIN Startup Class, owinstartup

How to define a valid OWIN Startup Class, owinstartup

<add key="owin:appStartup" value="OwinConsoleApp.Startup1" />

Define a friendly Startup class

<appSettings>    <add key="owin:appStartup" value="ProductionConfiguration" />       </appSettings>

 

[assembly: OwinStartup("ProductionConfiguration", typeof(StartupDemo.ProductionStartup2))]namespace StartupDemo{    public class ProductionStartup    {        public void Configuration(IAppBuilder app)        {            app.Run(context =>            {                string t = DateTime.Now.Millisecond.ToString();                return context.Response.WriteAsync(t + " Production OWIN App");            });        }    }    public class ProductionStartup2    {        public void Configuration(IAppBuilder app)        {            app.Run(context =>            {                string t = DateTime.Now.Millisecond.ToString();                return context.Response.WriteAsync(t + " 2nd Production OWIN App");            });        }    }}

 

Https://docs.microsoft.com/en-us/aspnet/aspnet/overview/owin-and-katana/owin-startup-class-detection