public Persistence chosePersistence(String persistence) {
        try {
        String persistenceName = new String(Files.readAllBytes(Paths.get("persistence.properties")));
        if (persistence.equalsIgnoreCase("XMLPersistence".trim())) {
            return new XMLPersistence();
        }
        throw new IllegalArgumentException("No such persistence");
        } catch (IOException e) {
            System.out.println("Error reading type of persistence from persistence.properties ");
        }
    }