How to use the messaging-api-line.Line.createAudio function in messaging-api-line

pushAudio(
    audio: {
      originalContentUrl: string;
      duration: number;
    },
    options?: LineTypes.MessageOptions
  ) {
    return this.push([Line.createAudio(audio, options)], options);
  }

sendAudio(
    audio: {
      originalContentUrl: string;
      duration: number;
    },
    options?: LineTypes.MessageOptions
  ) {
    return this.send([Line.createAudio(audio, options)], options);
  }

replyAudio(
    audio: {
      originalContentUrl: string;
      duration: number;
    },
    options?: LineTypes.MessageOptions
  ) {
    return this.reply([Line.createAudio(audio, options)], options);
  }