class MyConfigSingleton : public Singleton
{
   MyConfigSingleton()   { /*get fileName*/ plog::init(fileName/*, ...*/); LOGD << "Created."; }
   ~MyConfigSingleton() { LOGD << "Fail."; }

   void doNothing() const {LOGD << "Doing nothing";}
};

int main()
{
    // init order - MyConfigSingleton::MyConfigSingleton (), Logger::Logger()
    MyConfigSingleton::getInstance()->doNothing();

    // deinit order: Logger::~Logger(), MyConfigSingleton::~MyConfigSingleton()
    return 0;
}