syntax_data: {"ast_node_type":"other","tokens":[{"end":19,"kind":"keyword","start":0,"text":"match"}]}
source_snippet:         match res {
context_before:     pub fn res_generics_def_id(self, res: Res) -> Option<DefId> {
context_after:             Res::Def(DefKind::Ctor(CtorOf::Variant, _), def_id) => {