message: derive_docs function does not need to be public
diff: @@ -30,7 +30,7 @@ use syn::Token;
  const STARLARK_DOCS_ATTRS: &str = "starlark_docs_attrs";
  -pub fn derive_docs(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
  +pub(crate) fn derive_docs(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
  let input = parse_macro_input!(input as DeriveInput);
  expand_docs_derive(input)
  