Android : Java bluetooth multiplayer extension game maker

I am searching for a while in multiple internet sites a possibility to use java to implement bluetooth multiplayer for GameMaker.

GameMaker has the ability to use a .java file to add functions to GML ( GameMaker Language ) but it needs a special type of script, here is an example : http://help.yoyogames.com/entries/30690273-Creating-A-Native-Extension-For-Android-GMS-v1-3-

So I searched a .java file with this scripting that lets use bluetooth multiplayer but I didn't found anything. I've decided to ask this forum for a file that has this functions : let turn bluetooth on, make visible, connect to another phone and send and receive variables and that has the needed scripting type.

This file would help any user of the Android export module of GameMaker : they could all use multiplayer, a function that is missing in the mobile exportation of this game engine.

                                       Thanking in advance,
                                          extensionsfan.