{"ast_node_type":"variable","tokens":[{"end":57,"kind":"keyword","start":0,"text":"let"}]}
                    let mut hasher = StableHasher::new();
                let local_hash = self.tcx.with_stable_hashing_context(|mut hcx| {
                    expn_id.expn_data().hash_stable(&mut hcx, &mut hasher);