/// <summary>
 /// Define modo de activacao com valor indicado.
 /// </summary>
 /// <param name="activationMode">Nova definicao de modo de activacao.</param>
 /// <exception cref="DuplicateConfigurationException">Ocorre, se definicao for dupla, ou seja, se nao for 1a definicao.</exception>
 public void SetActivationMode(ActivationMode activationMode)
 {
     if (IsActivationModeDefined)
     {
         throw new DuplicateConfigurationException("Activação".ErrMsgAttemptedDoubleConfig(ActivationModeV.ToString(), activationMode.ToString()));
     }
     ActivationModeV = activationMode;
 }