void addGroup(int meshDimRelToMaxExt, const DataArrayInt *ids) throw(INTERP_KERNEL::Exception);
void removeMeshAtLevel(int meshDimRelToMax) throw(INTERP_KERNEL::Exception);
void setMeshAtLevel(int meshDimRelToMax, MEDCouplingUMesh *m, bool newOrOld=false) throw(INTERP_KERNEL::Exception);
void addGroup(int meshDimRelToMaxExt, const DataArrayInt *ids) throw(INTERP_KERNEL::Exception);
void removeMeshAtLevel(int meshDimRelToMax) throw(INTERP_KERNEL::Exception);
void setMeshAtLevel(int meshDimRelToMax, MEDCouplingUMesh *m, bool newOrOld=false) throw(INTERP_KERNEL::Exception);