interface G22MasterStuff {

  RunnablesReferenceQueue runnablesReferenceQueue();

  EphemeralObjectIDs ephemeralObjectIDs();

  File databasesMotherDir();

  bool projectExists(S name);

  IG22LoadedDB openDatabase(File dir, bool hidden default false);

  IG22LoadedDB openDB(S dbName, bool hidden default false);

  void closeDatabase(File dir);

  void switchToDatabase(File dir);

  Cl<File> openConceptDirs();

  IG22LoadedDB getLoadedDB(Concepts concepts);

  IG22LoadedDB getLoadedDBForConceptDir(File dir);

  Cl<? extends IG22LoadedDB> getLoadedDBs aka openProjects();

  G22MasterStuff onLoadedDBsChange(Runnable r);

  G22MasterStuff removeLoadedDBsChangeListener(Runnable r);

  IG22LoadedDB reopenDB(IG22LoadedDB db);

  IF1<S, Class> makeClassFinder();

  IGetterWithNotify<Int> lvGazelleUserCount();

  ILASClassLoader lasClassLoader();

  bool devMode();

  void newClassesDefined();

  selfType onNewClassesDefined(Runnable r);

  selfType removeNewClassesDefinedListener(Runnable r);

  default bool isConceptDirLoaded(File dir) {

    ret getLoadedDBForConceptDir(dir) != null;

  }

  void restart();

  bool isLoading();

}