message: Add a virtual to a base class method... (use override next time...)
diff: @@ -160,7 +160,7 @@ public:
  virtual void FillI(SparseMatrix &mat, const bool keep_nbr_block = false) const;
  /** Fill the J and Data arrays of SparseMatrix corresponding to the sparsity
  pattern given by this L2FaceRestriction, and the values of ea_data. */
  - void FillJAndData(const Vector &ea_data,
  + virtual void FillJAndData(const Vector &ea_data,
  SparseMatrix &mat,
  const bool keep_nbr_block = false) const;
  /// This methods adds the DG face matrices to the element matrices.
  