Getting prefixes w/ GroupManager

I don't like essentials, and I want the prefixes, but don't want essentials. I am using GroupManager. Is there anyway I could make it so when a player talks it gets their prefix.

 

ehArcher
Either hook group manager or use the vault api

 

Heirteir
Vault is an API

 

I have added the Hook for GroupManager and now I need the Event. What would it be?

@EventHandler
public void onChat(AsyncPlayerChatEvent e){
e.setMessage(getPrefix + e.getMessage());
}
What would I use as the getPrefix method?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

ehArcher
More info: https://github.com/MilkBowl/Vault

chat.getPlayerPrefix(player);

 

Without vault :S