Function ValidateCellId

Common/DataModel/vtkPolyDataInternals.h:205–210

  }

  static bool ValidateCellId(vtkIdType cellId) noexcept
  {
    // is positive, won't truncate:
    return (
      (static_cast<vtkTypeUInt64>(cellId) & CELLID_MASK) == static_cast<vtkTypeUInt64>(cellId));
  }

  void DeepCopy(CellMap* other)
  {