{"ast_node_type":"variable","tokens":[{"end":96,"kind":"keyword","start":0,"text":"let"}]}
    let original_node = token_at_offset_ignore_whitespace(&original_file.value, original_offset)
        |item: &ast::Item| item.syntax().ancestors().skip(1).find_map(ast::Item::cast);
        .and_then(|token| token.parent_ancestors().find_map(ast::Item::cast));