{"ast_node_type":"variable","tokens":[{"end":90,"kind":"keyword","start":0,"text":"let"}]}
        let res = MacroCall { path, expand_to, ctxt: span_map.span_for_range(range).ctx };
        let expand_to = hir_expand::ExpandTo::from_call_site(m);
        self.tree.small_data.insert(ast_id.upcast(), SmallModItem::MacroCall(res));