bool isEmpty() Returns whether the form is empty.

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

ChoiceListInterface

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

bool hasAttribute(string $name) Returns whether the attribute with the given name exists.

FormTypeExtensionInterface[]

class DataCollectorListener implements

FormTypeGuesserInterface|null

string getType() Returns the guessed field type.

offsetUnset(mixed $offset) Unsupported method. This method should not be invoked.