{"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"self.iter.by_ref().find_map(|el|"}]}
        self.iter.by_ref().find_map(|el| {
    fn next(&mut self) -> Option<ast::Comment> {
            el.into_token().and_then(ast::Comment::cast).filter(ast::Comment::is_doc)