syntax_data: {"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:     if tcx.sess.opts.unstable_opts.graphviz_dark_mode {
context_before:         vec![dot::RenderOption::Fontname(tcx.sess.opts.unstable_opts.graphviz_font.clone())];
context_after:         render_opts.push(dot::RenderOption::DarkTheme);