bool offsetExists(int $position) Returns whether a position exists in the iterator.

class ResolvedFormType implements

setFormFactory(FormFactoryInterface $formFactory)

buildView(FormView $view,

ValueGuess guessRequired(string $class, string

FormRendererEngineInterface

offsetUnset(string $name) Removes a child (implements \ArrayAccess).

ResolvedFormTypeInterface

array extractDefaultData(FormInterface $form)

postSubmit(FormEvent $event)