{"ast_node_type":"variable","tokens":[{"end":49,"kind":"keyword","start":0,"text":"let"}]}
            let let_underscore_ignore_sugg = || {
            let drop_is_single_call_in_arm = is_single_call_in_arm(cx, arg, expr);
                if let Some((_, node)) = cx.tcx.hir_parent_iter(expr.hir_id).nth(0)