{"ast_node_type":"variable","tokens":[{"end":84,"kind":"keyword","start":0,"text":"let"}]}
            let node = this.lower_pat_ident(pat, ann, ident, pat_hir_id, lower_sub);
            let pat_hir_id = this.lower_node_id(pat.id);
            this.pat_with_node_id_of(pat, node, pat_hir_id)