_run(cb) {
    this.done = cb;

    var events = observe(this.rl);

    var validation = this.handleSubmitEvents(
      events.line.pipe(map(this.getCurrentValue.bind(this)))
    );
    validation.success.forEach(this.onEnd.bind(this));
    validation.error.forEach(this.onError.bind(this));

    events.normalizedUpKey
      .pipe(takeUntil(validation.success))
      .forEach(this.onUpKey.bind(this));
    events.normalizedDownKey
      .pipe(takeUntil(validation.success))
      .forEach(this.onDownKey.bind(this));
    events.numberKey
      .pipe(takeUntil(validation.success))
      .forEach(this.onNumberKey.bind(this));
    events.spaceKey
      .pipe(takeUntil(validation.success))
      .forEach(this.onSpaceKey.bind(this));
    events.aKey.pipe(takeUntil(validation.success)).forEach(this.onAllKey.bind(this));
    events.iKey.pipe(takeUntil(validation.success)).forEach(this.onInverseKey.bind(this));

    // Init the prompt
    cliCursor.hide();
    this.render();
    this.firstRender = false;

    return this;
  }
The charset recognize for EUC-JP.  A singleton instance of this class
   is created and kept by the public CharsetDetector class