{"ast_node_type":"variable","tokens":[{"end":92,"kind":"keyword","start":0,"text":"let"}]}
                let (i, _) = argmap.insert_full((arg_index, ArgumentType::Usize), arg.span);
            if let Ok(arg_index) = arg.index {
                let count_param = ctx.arena.alloc(ctx.expr_lang_item_type_relative(