def url_for(path, opts = {})
      path = absolute(path)
      (opts[:expires] ? storage.media(path) : storage.shares(path))['url']
    end
def url_for(path, opts = {})
      path = absolute(path)
      (opts[:expires] ? storage.media(path) : storage.shares(path))['url']
    end
Only option is "expires" and it's a boolean