def add_auth_details_to_options(options)
  return unless @auth_details

  if @auth_details.has_key? :access_token
    options[:headers] = {
      "Authorization" => "Bearer #{@auth_details[:access_token]}" }
  elsif @auth_details.has_key? :api_key
    if not options.has_key? :basic_auth
      options[:basic_auth] = {
        :username => @auth_details[:api_key], :password => 'x' }
    end
  end
end