{"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"file.get_line(line.line_index"}]}
    file.get_line(line.line_index - 1).map(|a| a.to_string()).unwrap_or_default()
fn source_string(file: Arc<SourceFile>, line: &Line) -> String {
}