src/Http/Routing/test/testassets/RoutingWebSite/HelloExtension/HelloAppBuilderExtensions.cs


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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System;
using Microsoft.Extensions.Options;
using RoutingWebSite.HelloExtension;

namespace Microsoft.AspNetCore.Builder;

public static class HelloAppBuilderExtensions
{
    public static IApplicationBuilder UseHello(this IApplicationBuilder app, string greeter)
    {
        if (app == null)
        {
            throw new ArgumentNullException(nameof(app));
        }

        return app.UseMiddleware<HelloMiddleware>(Options.Create(new HelloOptions
        {
            Greeter = greeter
        }));
    }
}