{"ast_node_type":"variable","tokens":[{"end":56,"kind":"keyword","start":0,"text":"let"}]}
            let pat_hir_id = this.lower_node_id(pat.id);
            let lower_sub = |this: &mut Self| Some(this.pat_wild_with_node_id_of(sub, sub_hir_id));
            let node = this.lower_pat_ident(pat, ann, ident, pat_hir_id, lower_sub);