public function __invoke(ElementInterface $element = null, $buttonContent = null)
{
if ($element && !$element->hasAttribute('class')) {
$this->addClasses($element, ['btn', 'btn-default']);
}
return parent::__invoke($element);
}
/**
* Button element
*
* @param ElementInterface|null $element
* @param null $buttonContent
* @return string|Helper\FormButton
*/
public function button(ElementInterface $element = null, $buttonContent = null)
{
$helper = new Helper\FormButton();
return $helper->__invoke($element, $buttonContent);
}