BoilerplateHolder

template<typename T>
class BoilerplateHolder: public QObject {
    Q_OBJECT
public:
   BiolerplateHolder(T&& value): m_value{std::forward(value)} {}
   T get() { return m_value; } //pokusiłbym się o usunięcie gettera i settera i przeciążenie odpowiednich operatorów
   void set(T newValue) { m_value = newValue; emit valueChanged(); }
signals:
    void valueChanged();
private:
   T m_value;
}
class TicksPerPower : public QObject {
    Q_OBJECT
    Q_PROPERTY(BoilerplateHolder<int> minPowerLevel READ minPowerLevel WRITE setMinPowerLevel NOTIFY minPowerLevelChanged)
    Q_PROPERTY(BoilerplateHolder<int> maxPowerLevel READ maxPowerLevel WRITE setMaxPowerLevel NOTIFY maxPowerLevelChanged)
    Q_PROPERTY(BoilerplateHolder<int> minPowerTicks READ minPowerTicks WRITE setMinPowerTicks NOTIFY minPowerTicksChanged)
    Q_PROPERTY(BoilerplateHolder<int> maxPowerTicks READ maxPowerTicks WRITE setMaxPowerTicks NOTIFY maxPowerTicksChanged)
private:
    BoilerplateHolder<int> m_minPowerLevel{};
    BoilerplateHolder<int> m_minPowerTicks{};

    BoilerplateHolder<int> m_maxPowerLevel{};
    BoilerplateHolder<int> m_maxPowerTicks{};
};