public static Toolkit CreateToolkit<T> (bool isGuest) where T: ToolkitEngineBackend {
var t = typeof (T);
var result = new Toolkit();
result.backend = (ToolkitEngineBackend)Activator.CreateInstance(t);
result.Initialize(isGuest);
result.toolkitType = ToolkitType.Other;
return result;
}