fn update_attribute(
editor: &SyntaxEditor,
old_derives: &[Path],
old_tree: &TokenTree,
old_trait_path: &Path,
attr: &Attr,
)fn update_attribute(
editor: &SyntaxEditor,
old_derives: &[Path],
old_tree: &TokenTree,
old_trait_path: &Path,
attr: &Attr,
)