/**
  * Returns calculator select element
  *
  * @param FormInterface $form
  *
  * @return \WellCommerce\Bundle\FormBundle\Elements\Optioned\Select
  */
 private function getCalculatorTypeElement(FormInterface $form)
 {
     return $form->getChildren()->get('costs_data')->getChildren()->get('calculator');
 }
 /**
  * @param FormInterface $form
  *
  * @return \WellCommerce\Bundle\FormBundle\Elements\Optioned\Select
  */
 protected function getBoxTypeSelect(FormInterface $form)
 {
     return $form->getChildren()->get('required_data')->getChildren()->get('boxType');
 }