{"ast_node_type":"variable","tokens":[{"end":21,"kind":"keyword","start":0,"text":"let"}]}
        let rcvr_ty =
        let descr = self.tcx.associated_item(item_def_id).descr();
            rcvr_ty.map(|t| format!("`{t}`")).unwrap_or_else(|| "the receiver".to_string());