public function preSetData(FormEvent $event)
{
$taxon = $event->getData();
if (null === $taxon) {
return;
}
$event->getForm()->add($this->factory->createNamed('parent', TaxonChoiceType::class, $taxon->getParent(), ['filter' => $this->getFilterTaxonOption($taxon), 'required' => false, 'label' => 'sylius.form.taxon.parent', 'placeholder' => '---', 'auto_initialize' => false]));
}