array extractDefaultData(FormInterface $form)

collectSubmittedData(FormInterface $form)

string getExtendedType() Returns the name of the type being extended.

class DataCollectorExtension extends

class FormDataCollector extends

buildPreliminaryFormTree(FormInterface $form)

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

buildForm(FormBuilderInterface $builder,

array extractConfiguration(FormInterface $form)

OptionsResolver getOptionsResolver()