Список доступных профессий

/**
     * Gets the set of possible class transfers for this class.
     * @return a set of PlayerClass instances representing possible class transfers.
     */
    public Set<PlayerClass> getNextClasses()
    {
        return _nextClasses;
    }
    
    /**
     * Adds a class to the list of possible class transfers for this class.
     * @param playerClass the PlayerClass to add.
     */
    private void addNextClass(PlayerClass playerClass)
    {
        _nextClasses.add(playerClass);
    }