LauncherCore core = LauncherCore.Create(
	new LauncherCoreCreationOption(
		javaPath: Config.Instance.JavaPath, // by default it will be the first version finded
		gameRootPath: null, // by defualt it will be ./.minecraft/
		versionLocator: the Version Locator // by default it will be new JVersionLocator()
	));

var versions = core.GetVersions();

var version = core.GetVersion("1.8");

var result = core.Launch(new LaunchOptions
{
	Version = App.LauncherCore.GetVersion(server.VersionId)
	Authenticator = new OfflineAuthenticator("Steve"), // offline
	//Authenticator = new YggdrasilLogin("*@*.*", "***", true), // online
	MaxMemory = Config.Instance.MaxMemory, // optional
	MinMemory = Config.Instance.MaxMemory, // optional
	Mode = LaunchMode.MCLauncher, // optional
	Server = new ServerInfo {Address = "mc.hypixel.net"}, //optional
	Size = new WindowSize {Height = 768, Width = 1280} //optional
}, (Action<MinecraftLaunchArguments>) (x => { })); // optional ( modify arguments before launching

Reporter.SetClientName("Your launcher's name"); // set name
Reporter.SetReportLevel(ReportLevel.Full); // full report
//Reporter.SetReportLevel(ReportLevel.Basic); // basic report
//Reporter.SetReportLevel(ReportLevel.Min); // simplified report
//Reporter.SetReportLevel(ReportLevel.None); // turn off