如何以编程方式注册Nlog扩展/布局渲染器(NLog.Web.AspNetCore)？

using NLog.Extensions.Logging;
using NLog.Web;

public void ConfigureServices(IServiceCollection services)
{
    // 添加NLog服务
    services.AddLogging(loggingBuilder =>
    {
        loggingBuilder.ClearProviders();
        loggingBuilder.SetMinimumLevel(Microsoft.Extensions.Logging.LogLevel.Trace);
        loggingBuilder.AddNLog();
    });

    // 添加NLog.Web服务
    services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
    services.AddSingleton<NLogILoggerFactory, NLogLoggerFactory>();
    services.AddMvc();
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
    // 启用NLog中间件
    app.AddNLogWeb();

    // 配置NLog
    env.ConfigureNLog("nlog.config");

    // 其他中间件和配置
    // ...
}