class Roadie::NetHttpProvider

def download(url)
  url = "https:#{url}" if url.start_with?("//")
  uri = URI.parse(url)
  if access_granted_to?(uri.host)
    get_response(uri)
  else
    raise CssNotFound.new(
      css_name: url,
      message: "#{uri.host} is not part of whitelist!",
      provider: self
    )
  end
end