How to use the @keepkey/device-protocol/lib/messages_pb.ChangePin function in @keepkey/device-protocol

public async changePin(): Promise {
    const changePin = new Messages.ChangePin();
    // User may be propmpted for button press up to 2 times
    await this.transport.call(Messages.MessageType.MESSAGETYPE_CHANGEPIN, changePin, LONG_TIMEOUT)
  }

public async removePin(): Promise {
    const changePin = new Messages.ChangePin();
    changePin.setRemove(true);
    // send
    await this.transport.call(
      Messages.MessageType.MESSAGETYPE_CHANGEPIN,
      changePin
    );
    this.cacheFeatures(undefined)
  }