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

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

array getValuesForChoices(array $choices) Returns the values corresponding to the given choices

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

class DateTimeToRfc3339Transformer extends

array getValues() Returns the values for the choices.

preSubmit(FormEvent $event)

mixed reverseTransform(string $rfc3339) Transforms a formatted string following RFC 3339 into

array getIndicesForValues(array $values) deprecated

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