message: Adding error message
diff: @@ -2828,6 +2828,7 @@ const int *RT_R1D_FECollection::DofOrderForOrientation(Geometry::Type GeomType,
  FiniteElementCollection *RT_R1D_FECollection::GetTraceCollection() const
  {
  + MFEM_ABORT("this method is not implemented in RT_R1D_FECollection!");
  return NULL;
  }
  