public void InvokeOnMainLoop (GuiUnit.InvokerHelper helper)
{
var invokeOnMainThreadMethods = Application.GetMethods (System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Static);
var invokeOnMainThreadMethod = invokeOnMainThreadMethods.First (d => d.Name == "Invoke" && d.GetParameters ().Length == 1);
EventHandler invoker = delegate { helper.Invoke (); };
invokeOnMainThreadMethod.Invoke (null, new [] { invoker });
}