StoreDto Node1 StoreDto + since + insertionTime - m_app_name - m_app_version + StoreDto() + StoreDto() + StoreDto() + setAppVersion() + setAppName() + getStreamerInfo() + to_json() + from_json() Node2 std::string Node2->Node1 +data +hash Node3 std::basic_string< char > Node3->Node2