How to set the hidden attribute on a Windows directory in Rust?

I see how to create a file with the attribute.

let file = OpenOptions::new()
    .write(true)
    .create(true)
    .attributes(winapi::FILE_ATTRIBUTE_HIDDEN)
    .open("foo.txt");

I also see that std::os::windows::fs::MetadataExt will return the attribute mask.

However, I'd like to create a directory or set a directory's attribute with the hidden flag. I dug through the fs:: and Windows sources and I don't see anything.