Add more support for methodmaps!

[GAMMACASE]

Like when you creating something by using methodmaps and you want to see all functions for that methodmap and then write info about that function after you select it.
Menu menu = new Menu(Menu_Callback);
menu.
After you type . it would be cool if it display all available functions for that methodmap and if you type smth like
menu.AddItem(
it would display comment information for that function, like when you type simple function AddMenuItem(
or smth similar.