anchor.diff:     * [QueryHandler]n.
      * */
     static Future<EventRouter> create(httpHandlers, eventHandler, queryHandler,
  -      {String eventFilePath: 'data/events.dat',
  -      String backupPath: 'data/backup',
  +      {String eventFilePath: '/data/events.dat',
  +      String backupPath: '/backup',
  +      String backupFilePath: '/backup/events.dat',
         String databaseSchemaPath: 'lib/schema.sql',
         Authenticator authenticator,
         bool skipplayback: false}) async {
  
positive.code:       this.queryHandler,
        this.eventFile,
        this.backupDirectory,
        this.authenticator,
        this.skipplayback);
  
  
negative.code:   /// Ordner, in den die alte EventQueue bei Start gesichert wird
    final Directory backupDirectory;
  
    final File eventFileMirror;
  
    /// Eventfile sink
    EventFileWriter _eventFileSink = null;
  
    /// Eventfile mirror sink
    EventFileWriter _eventFileMirrorSink = null;
  
    /// Bekannte [EventHandler], die bei Ausführung eines bestimmten Events ausgeführt werden sollen
    final Map<String, List<EventHandler>> eventHandler;
  
  