{"ast_node_type":"variable","tokens":[{"end":84,"kind":"keyword","start":0,"text":"let"}]}
                        let references_self = match pred.skip_binder().term.kind() {
                        // `trait_object_dummy_self`, so check for that.
                            ty::TermKind::Ty(ty) => ty.walk().any(|arg| arg == dummy_self.into()),