    |
 96 | fn add_title_line(result: &mut Vec<String>, main_annotation: Option<&Annotation>) {
 97 |     if let Some(annotation) = main_annotation {
    |                 ^^^^^^^^^^ Variable defined here
 98 |         result.push(format_title_line(
 99 |             &annotation.annotation_type,
    |              ^^^^^^^^^^ Referenced here
100 |             None,
101 |             &annotation.label,
    |              ^^^^^^^^^^ Referenced again here
102 |         ));
103 |     }
104 | }
    |
