@Override
  public String toString() {
    return "BandUser {"
      + (extReferences != null ? " extReferences [" + extReferences + "]" : "")
      + (cls != null ? " cls [" + cls + "]" : "")
      + (idx != null ? " idx [" + idx + "]" : "")
      + (recommendedValue != null ? " recommendedValue [" + recommendedValue + "]" : "")
      + (quality != null ? " quality [" + quality + "]" : "")
      + (legacyReleasability != null ? " legacyReleasability [" + legacyReleasability + "]" : "")
      + (value != null ? " value [" + value + "]" : "")
      + (remarks != null ? " remarks [" + remarks + "]" : "")
      + (availability != null ? " availability [" + availability + "]" : "")
      + "}";
  }