{"ast_node_type":"variable","tokens":[{"end":93,"kind":"keyword","start":0,"text":"let"}]}
        let tokens = self.exp_map.ranges_with_span_exact(span).flat_map(move |(range, ctx)| {
    ) -> Option<InMacroFile<impl Iterator<Item = (SyntaxToken, SyntaxContext)> + '_>> {
            self.expanded.value.covering_element(range).into_token().zip(Some(ctx))