How do i add extra fields in magento 2 Core Review module Form

  namespace QaisarSatti\HelloWorld\Plugin\Adminhtml\Add;
  class Form extends \Magento\Review\Block\Adminhtml\Add\Form
  {
   public function beforeSetForm(\Magento\Review\Block\Adminhtml\Add\Form $object, $form) {
       $fieldset = $form->addFieldset(
           'review_custom',
           ['legend' => __('Review Custom Field'), 'class' => 'fieldset-wide']
       );
      $fieldset->addField(
           'test',
           'text',
           ['label' => __('Test'), 'required' => false, 'name' => 'test']
       );
      return [$form];
   }
}

  namespace QaisarSatti\HelloWorld\Plugin\Adminhtml\Edit;
  class Form extends \Magento\Review\Block\Adminhtml\Edit\Form
  {
   public function beforeSetForm(\Magento\Review\Block\Adminhtml\Edit\Form $object, $form) {
      $review = $object->_coreRegistry->registry('review_data');
       $fieldset = $form->addFieldset(
           'review_custom',
           ['legend' => __('Review Custom Field'), 'class' => 'fieldset-wide']
       );
      $fieldset->addField(
           'test',
           'text',
           ['label' => __('Test'), 'required' => false, 'name' =>; 'test']
       );
      $form->setValues($review->getData());
       return [$form];
   }
}