public long convertDurationToMillions() throws ParseException {
    if (this.duration == null || this.duration.isEmpty()) {
      return 0L;
    }
    return Durations.toMillis(Durations.parse(duration));
  }
Represents a track (eg: a song) as returned by the Google Music API.
extensions/data-transfer/portability-data-transfer-google/src/main/java/org/datatransferproject/datatransfer/google/musicModels/GoogleTrack.java