SMESH::SMESH_Mesh_var aMesh = SMESH::GetMeshByIO(myMeshActor->getIO());
if (aMesh->_is_nil()) {
SUIT_MessageBox::information(SMESHGUI::desktop(), tr("SMESH_ERROR"),
SMESH::SMESH_Mesh_var aMesh = SMESH::GetMeshByIO(myMeshActor->getIO());
if (aMesh->_is_nil()) {
SUIT_MessageBox::information(SMESHGUI::desktop(), tr("SMESH_ERROR"),