// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using Microsoft.AspNetCore.Builder;
 
namespace Microsoft.AspNetCore.Hosting;
 
/// <summary>
/// Provides an interface for extending the middleware pipeline with new
/// Configure methods. Can be used to add defaults to the beginning or
/// end of the pipeline without having to make the app author explicitly
/// register middleware.
/// </summary>
public interface IStartupFilter
{
    /// <summary>
    /// Extends the provided <paramref name="next"/> and returns an <see cref="Action"/> of the same type.
    /// </summary>
    /// <param name="next">The Configure method to extend.</param>
    /// <returns>A modified <see cref="Action"/>.</returns>
    Action<IApplicationBuilder> Configure(Action<IApplicationBuilder> next);
}