{"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"severity:"}]}
        severity: Some(lsp::to_proto::diagnostic_severity(d.severity)),
        range: lsp::to_proto::range(line_index, d.range.range),
        code: Some(lsp_types::NumberOrString::String(d.code.as_str().to_owned())),