class ValidationListener implements

string getBlockPrefix() Returns the prefix of the template block name for this type. The

class CheckboxListMapper implements

class FormDataCollector extends

interface FormDataCollectorInterface implements

static array getSubscribedEvents() Returns an array of event names this subscriber

string|null getParent() Returns the name of the parent type.

buildForm(FormBuilderInterface $builder,

string|null getParent() Returns the name of the parent type.

preBind(FormEvent $event)