public function buildForm(FormBuilderInterface $builder, array $options)
 {
     $currencyList = ReaderCurrency::getCurrencyList();
     $builder->add('preferredCurrency', 'choice', ['choices' => array_combine($currencyList, ["UAH", "USD", "RUB"]), 'expanded' => TRUE, 'multiple' => FALSE, 'data' => $this->preferredCurrency ?: $currencyList[0], 'invalid_message' => "private_office.preferred_currency.invalid_message", 'label' => 'private_office.preferred_currency.label']);
 }