public function render(InputField $field)
 {
     $required = null;
     if ($field->hasRule('ch\\metanet\\formHandler\\rule\\RequiredRule')) {
         $required = ' aria-required="true"';
     }
     return '<input type="email" name="' . $field->getFormIdentifierAsString() . '" id="' . $field->getId() . '" value="' . htmlspecialchars($field->getValue()) . '"' . $this->getAttributesAsHtml() . $required . '>';
 }