An attention-based automatic vulnerability detection approach with GGNNahttps://wpn.zut.edu.cn/https/77726476706e69737468656265737421fbf952d2243e635930068cb8/kns8/Detail/RedirectScholar?flag=TitleLink&tablename=GARJ2021_4&filename=SSJD6268F1159B1EB7594E2F79F0AFB8D0AB