syntax_data: {"ast_node_type":"variable","tokens":[{"end":46,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:                 if let Some(before) = before {
context_before:             self.write_row(w, &index_str, &statement_str, |_this, w, fmt| {
context_after:                     write!(w, r#"<td {fmt} align="left">{before}</td>"#)?;