/// <summary>Create (INSERT) user account.</summary>
public Entities.UserCredential CreateUserAccount(Entities.UserCredential a)
{
throw new NotImplementedException();
}
/// <summary>Set (UPDATE) user account. Only for user activation.</summary>
public Entities.UserCredential SetUserAccount(Entities.UserCredential a, string password, string activationKey, bool isActivated)
{
throw new NotImplementedException();
}