Method GetReferenceSN

isis/src/control/objs/ControlPoint/ControlPoint.cpp:1759–1767

* @returns The cube serial number of the reference measure */

   * @returns The cube serial number of the reference measure
   */
  QString ControlPoint::GetReferenceSN() const {
    if (!HasRefMeasure()) {
      QString msg = "There is no reference measure set in the ControlPoint [" +
          GetId() + "]";
      throw IException(IException::Programmer, msg, _FILEINFO_);
    }

    return referenceMeasure->GetCubeSerialNumber();
  }


  /**