/**
  * Render a form <input> hidden element from the provided $element
  * @param  ElementInterface $element
  * @param  null|string $formType
  * @param  array $displayOptions
  * @return string
  */
 public function render(ElementInterface $element, $formType = null, array $displayOptions = array())
 {
     $this->prepareElementBeforeRendering($element, $formType, $displayOptions);
     $html = parent::render($element);
     return $html;
 }
 /**
  * Hidden
  *
  * @param ElementInterface|null $element
  * @return string|Helper\FormInput
  */
 public function hidden(ElementInterface $element = null)
 {
     $helper = new Helper\FormHidden();
     return $helper->__invoke($element);
 }