private String[] getListSpecialInventory(File specialInventoryFile) throws Exception{
        FileConfiguration fileConfiguration = YamlConfiguration.loadConfiguration(specialInventoryFile);
        try{
            Set<String> nameList = fileConfiguration.getConfigurationSection("special_inventories").getKeys(false);
    		String []tmp = nameList.toArray(new String[0]);
    		if(tmp.length == 0){
    			throw new Exception();
    		}
    		return tmp;
        }catch(Exception e){
        	return null;
        }
	}