InDetGNNHardScatterSelection::ConstituentsInputConfig Node1 InDetGNNHardScatterSelection ::ConstituentsInputConfig + type + order + selection Node2 std::string Node2->Node1 +name +link_name +output_name Node5 InDetGNNHardScatterSelection ::InputVariableConfig + type Node2->Node5 +name Node3 std::basic_string< char > Node3->Node2 Node4 std::vector< InDetGNNHard ScatterSelection::InputVariable Config > Node4->Node1 +inputs Node5->Node4 +elements