{"ast_node_type":"other","tokens":[{"end":61,"kind":"keyword","start":0,"text":"ty::BoundTyKind::Param(def_id)"}]}
                    ty::BoundTyKind::Param(def_id) => def_id,
                self.vars.insert(match bt.kind {
                    ty::BoundTyKind::Anon => {