using CmlLib.Core;
using CmlLib.Core.ProcessBuilder;
using CmlLib.Core.Auth.Microsoft;
var loginHandler = JELoginHandlerBuilder.BuildDefault();
var session = await loginHandler.Authenticate();
var launcher = new MinecraftLauncher();
var process = await launcher.InstallAndBuildProcessAsync("1.20.4", new MLaunchOption
{
Session = session
});
process.Start();