@EventHandler(priority=EventPriority.MONITOR)
	void onPlayerLogin(PlayerJoinEvent e) {
		String group = mPlugin.getPermissionsManager()
							  .getPrimaryGroup((String) null,
									  e.getPlayer().getName());
		if(group == null) return;
		mData.put(e.getPlayer().getName(), group);
		if(mPlugin.syncPlayerGroups(mData)){
			mData.clear();
		}
	}