getParent() публичный метод

Returns the parent field.
public getParent ( ) : Symfony\Component\Form\FormInterface
Результат Symfony\Component\Form\FormInterface The parent field
 /**
  * Get validation groups for the specified form
  *
  * @param Form|FormInterface $form
  *
  * @return array|string
  */
 protected function getValidationGroups(Form $form)
 {
     $result = array('Default');
     $groups = $form->getConfig()->getOption('validation_groups');
     if (empty($groups)) {
         // Try to get groups from a parent
         if ($form->getParent()) {
             $result = $this->getValidationGroups($form->getParent());
         }
     } elseif (is_array($groups)) {
         // If groups is an array - return groups as is
         $result = $groups;
     } elseif ($groups instanceof \Closure) {
         // If groups is a Closure - return the form class name to look for javascript
         $result = $this->getElementId($form);
     }
     return $result;
 }