Is is possible to set the "aspNetCore requestTimeout" value.........via "code" with Kestrel?

Is is possible to set the "aspNetCore requestTimeout" value (see xml below).........via "code" with Kestrel?

I cannot find something on the KestrelServerLimits object.

https://docs.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.server.kestrel.core.kestrelserverlimits?view=aspnetcore-3.1

Below is the xml code..........but hoping to do this in CODE, not via (published) xml.

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <system.webServer>
    <handlers>
      <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModule" resourceType="Unspecified"/>
    </handlers>
    <aspNetCore requestTimeout="00:20:00"  processPath="%LAUNCHER_PATH%" arguments="%LAUNCHER_ARGS%" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" forwardWindowsAuthToken="false"/>
  </system.webServer>
</configuration>

I tried the below (" serverOptions.Limits.KeepAliveTimeout = TimeSpan.FromSeconds(5); ")......but this does not control the server timeout from my postman tests.

namespace MyStuff
{
    using System;
    using Microsoft.AspNetCore.Hosting;
    using Microsoft.Extensions.Hosting;

    public class Program
    {
        public static void Main(string[] args)
        {
            CreateHostBuilder(args).Build().Run();
        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();

                    webBuilder.ConfigureKestrel(serverOptions =>
                    {
                        serverOptions.Limits.KeepAliveTimeout = TimeSpan.FromSeconds(5);
                    });

                });
    }
}

I've been reading from this microsoft article:

https://docs.microsoft.com/en-us/aspnet/core/fundamentals/servers/kestrel?view=aspnetcore-3.1#kestrel-options

Kestrel options The Kestrel web server has constraint configuration options that are especially useful in Internet-facing deployments.

Set constraints on the Limits property of the KestrelServerOptions class. The Limits property holds an instance of the KestrelServerLimits class.