Using RegisterForDispose to do something after the response has been sent

Startup.cs

public class Startup
    {
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            app.Use
            (
                async (context, next) =>
                {
                    Console.WriteLine("Hello from middleware");
                    await next.Invoke();
                }
            );

            // RegisterForDispose
            app.Use
            (
                async (context, next) =>
                {
                    context.Response.RegisterForDispose(new SneakyMethodToRunAfterResponse());
                    await next();
                }
            );

            app.UseHttpsRedirection();
            app.UseRouting();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapGet("/", async context =>
                {
                    Console.WriteLine("Hello from endpoint");
                    await context.Response.WriteAsync("Hello World!");
                });
            });
        }
    }

    public class SneakyMethodToRunAfterResponse : IDisposable
    {
        public void Dispose()
        {
            Console.WriteLine("Hello from the afterlife");
        }
    }