code: function _getHostEnv (hostUrl) {
    if (hostUrl) {
      if (hostUrl.startsWith('https://www.kth')) {
        return 'prod'
      } else if (hostUrl.startsWith('https://www-r.referens.sys.kth') || hostUrl.startsWith('https://app-r.referens.sys.kth')) {
        return 'ref'
      } else if (hostUrl.startsWith('http://localhost')) {
        return 'dev'
      } else {
        return 'prod'
      }
    }
  }
docs: Get the current environment from the given Host or Content Management Host.
  @param {*} host the given host URL.