bool offsetExists(string $name) Returns whether a child with the given name exists (implements

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

FormConfigBuilderInterface

buildView(FormView $view,

class ResetType extends AbstractType implements

FormConfigBuilderInterface

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

class ValidatorExtension extends

class DefaultChoiceListFactory implements

preSubmit(FormEvent $event)