{"ast_node_type":"variable","tokens":[{"end":82,"kind":"keyword","start":0,"text":"let"}]}
        let (line_docs_range, idx, original_line_src_range) = self.mapping[found];
        let found = self.mapping.binary_search_by(|(probe, ..)| probe.ordering(range)).ok()?;
        if !line_docs_range.contains_range(range) {