{"ast_node_type":"other","tokens":[{"end":92,"kind":"keyword","start":0,"text":"matches!(ident,"}]}
                                    matches!(ident, Some(Ident { name: kw::SelfLower, .. }))
                                self.r.tcx.fn_arg_idents(def_id).first().is_some_and(|&ident| {
                                })