using CmlLib;
 using CmlLib.Core;

 var login = new MLogin();
 var session = login.TryAutoLogin(); // 'session' is used in LaunchOption

 if (session.Result != MLoginResult.Success) // failed to auto login
 {
     var email = Console.ReadLine();
     var pw = Console.ReadLine();
     session = login.Authenticate(email, pw);

     if (session.Result != MLoginResult.Success)
          throw new Exception(session.Result.ToString()) // failed to login
 }

 var session = MSession.GetOfflineSession("USERNAME"); // 'session' is used in LaunchOption

 //var path = new Minecraft("your minecraft directory);
 var path = Minecraft.GetOSDefaultPath(); // mc directory

 var launcher = new CmlLib.Cml(path);
 launcher.ProgressChanged += (s, e) =>
 {
      Console.WriteLine("{0}%", e.ProgressPercentage);
 };
 launcher.FileChanged += (e) =>
 {
      Console.WriteLine("[{0}] {1} - {2}/{3}", e.FileKind.ToString(), e.FileName, e.ProgressedFileCount, e.TotalFileCount);
 };

 foreach (var item in launcher.ProfileInfos)
 {
     Console.WriteLine(item.Name);
 }

 var launchOption = new MLaunchOption
 {
     MaximumRamMb = 1024,
     Session = session, // Login Session. ex) Session = MSession.GetOfflineSession("hello")

     //LauncherName = "MyLauncher",
     //ScreenWidth = 1600,
     //ScreenHeigth = 900,
     //ServerIp = "mc.hypixel.net"
 };

 // launch forge
 //var process = launcher.Launch("1.12.2", "14.23.5.2768", launchOption);

 // launch vanila
 var process = launcher.Launch("1.15.2", launchOption);

 process.Start();