wrong example of using create function

class MySingleton : public QObject
{
    Q_OBJECT
    QML_ELEMENT
    QML_SINGLETON
    // Q_PROPERTY( ... )

public:
    MySingleton (QObject* object) {
         // replace the default constructor to trigger create function
    }

    static MySingleton *create(QQmlEngine *qmlEngine, QJSEngine *jsEngine)
    {
        MySingleton *result = nullptr;
        // Create the object using some custom constructor or factory.
        // The QML engine will assume ownership and delete it, eventually.
        return result;
    }

    // members, Q_INVOKABLE functions, etc
};