/// <summary>
 /// Set countries.
 /// </summary>
 /// <param name="countries">Countries.</param>
 protected virtual void SetCountries(CountryList countries)
 {
     Countries = countries;
 }
 /// <summary>
 /// Refresh cached data.
 /// </summary>
 /// <param name="userContext">User context.</param>
 protected virtual void RefreshCache(IUserContext userContext)
 {
     Countries = null;
 }