Using QtConcurrent with QtPlugin and getting function address

I use QFuture and QtConcurrent to manage threads in my application. Recently, I have decided to make my app more modular and therefore I adapted QtPlugin mechanism. I have interface used both in lib and application:

    class IPlugin {
    public:
      virtual ~IPlugin() {}
      virtual void run() {}
    };

    #define Plugin_iid "org.qt-project.Qt.Plugin.IPlugin"

    Q_DECLARE_INTERFACE(IPlugin, IPlugin_iid)
    }

I also have class Plugin in lib which inherits everything from class IPlugin:

    class Plugin : public  QObject, IPlugin {
      Q_OBJECT
      Q_INTERFACES(IPlugin)
      Q_PLUGIN_METADATA(IID "org.qt-project.Qt.Plugin.IPlugin" FILE "Plugin.json")
    public:
      Plugin();
      void run() Q_DECL_OVERRIDE;
    };

The problem is that I can't start new thread using QtConcurrent without specifying address of a function:

    QObject *plugin = pluginLoader.instance();
    if (plugin) {
         obj = qobject_cast<IPlugin *>(plugin);
         if (obj) {
             obj = QtConcurrent::run(*obj, &IPlugin::run);
         }
    }

Specifying base class address here does not help becouse base class method is invoked in that case. Is there a better way to solve that problem then including inherited header into application code base? I would like to avoid that.