private void OnBuscarEndereco()
        {
            if (IsBusy)
            {
                return;
            }

            IsBusy = true;

            try
            {
                Endereco.Cep    = RemoveCarecteres.ObterStringSemAcentosECaracteresEspeciais(Endereco.Cep);
                CepError        = string.Empty;
                CepErrorVisible = false;
                if (MyValidation.ValidarCep(Endereco.Cep))
                {
                    var e = Util.Location.GetCEPPosition(Endereco.Cep);

                    if (e != null)
                    {
                        Endereco = e;
                    }
                }
                else
                {
                    CepError        = "CEP inválido.";
                    CepErrorVisible = true;
                }
            }
            catch (Exception ex)
            {
                Application.Current.MainPage.DisplayAlert("Erro", ex.Message, "Ok");
            }
            finally
            {
                IsBusy = false;
            }
        }