class NumberType extends AbstractType

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

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

configureOptions(OptionsResolver

mapDataToForms(mixed $data, FormInterface[] $forms)

buildForm(FormBuilderInterface $builder,

class BirthdayType extends AbstractType

class DataTransformerChain implements

preSubmit(FormEvent $event)

configureOptions(OptionsResolver