code: function (remoteUrl) {
        if (remoteUrl.indexOf('http') !== 0) {
          grunt.log.error('Something seems wrong with this remote url: ' + remoteUrl);
        }
        return remoteUrl.toLowerCase().replace('://', '@@').replace(/\?/g, '@');
      }
docs: Transform URL to cache key in order to dump its content
  @param remoteUrl Remote content URL
  @returns {string|*} URL as cache key