Method SetSubject

lib/mdflib/include/mdflibrary/MdfHeader.h:58–58

    return str;
  }
  void SetSubject(const char* subject) { MdfHeaderSetSubject(header, subject); }
  std::string GetMeasurementId() const {
    std::string str(MdfHeaderGetMeasurementId(header, nullptr) + 1, '\0');
    str.resize(MdfHeaderGetMeasurementId(header, str.data()));