async restore() {
    debug('restore');
    try {
      if (fs.existsSync(process.env.PERSISTENCE_FILE)) {
        debug('File exists at ', process.env.PERSISTENCE_FILE);
        // tasks = {}
        this.tasks = JSON.parse(fs.readFileSync(process.env.PERSISTENCE_FILE));
        debug('persistance file is Loaded\n', 'TASKS ARRAY\n', this.tasks);
        // task = {
        //   id: TASK,
        //   id: TASK
        // }
      } else debug('No persistance file at', process.env.PERSISTENCE_FILE);
    } catch (err) {
      console.error(err);
      process.exit(2);
    }

    for (const id in this.tasks) {
      if (this.tasks.hasOwnProperty(id)) {
        // rehydrate
        debug('Before Rehydration');
        this.tasks[id] = new TASK(this.tasks[id].taskData, () => {
          // replicate the done
        }, this.tasks[id]);
        debug('After Rehydration');

        // * the bellow is equivalent of -> this._handler = new DOCKER(this); etc.
        this.tasks[id].initHandler();
        debug('HANDLER -> ', this.tasks[id]._handler);

        try {
          await this.tasks[id]._handler.reloadState();
          debug('Reattached to Task' /* this.tasks[id]._handler.container.id */);
        } catch (err) {
          console.log(err);
          // TODO restart job
        }
      }
    }

    // TODO: Uncomment save() callback
    this.saveTimer = setInterval(() => {
      debug('Calling save()');
      for (const id in this.tasks) {
        if (moment().isAfter(this.tasks[id].finishTime)) clearInterval(this.saveTimer);
      }
      this.save();
    }, 1000);
  }