AspNetCore.Docs/aspnet/fundamentals/static-files/sample/StartupEmpty.cs

using Microsoft.AspNetCore.Builder;
using Microsoft.Extensions.DependencyInjection;

namespace StaticFiles
{
    public class StartupEmpty
    {
        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        // >Configure
        public void Configure(IApplicationBuilder app)
        {
            app.UseDefaultFiles();
            app.UseStaticFiles();
        }
        // <Configure
    }
}