ZF2 helper function to remove all errors in a form or fieldset recursively

zf2ClearFormErrors

use Zend\Form\FieldsetInterface;

/**
 * Remove all errors in a form recursively
 * pass a form or a fieldset as parameter
 * 
 * @param FieldsetInterface $form
 * @return void
 */
public function clearFormErrors(FieldsetInterface $form)
{
    $arr = array();
    foreach($form->getElements() as $element) {
        $element->setMessages($arr);
    }
    foreach($form->getFieldsets() as $fieldset) {
        $this->clearFormErrors($fieldset);
    }
}