FormInterface::getErrors could have a dynamic return extension #166
Description
Currently, its return type is a FormErrorIterator with inside
Symfony\Component\Form\FormError|Symfony\Component\Form\FormErrorIterator
The phpdoc is
/**
* Returns the errors of this form.
*
* @param bool $deep Whether to include errors of child forms as well
* @param bool $flatten Whether to flatten the list of errors in case
* $deep is set to true
*
* @return FormErrorIterator An iterator over the {@link FormError}
* instances that where added to this form
*/
public function getErrors(bool $deep = false, bool $flatten = true);
So I would say it's always an iterator on Symfony\Component\Form\FormError, except if the parameter true, false are provided.