/**
  * @param \Magento\Framework\DataObject $params
  * @return mixed
  */
 public function getCreditmemoData(\Magento\Framework\DataObject $params)
 {
     /** @var \Magento\Sales\Model\Order\Item $orderItem */
     $orderItem = $params->getOrderItem();
     $data = $params->getCreditMemo();
     if ($orderItem->getOrder()->getBaseGrandTotal()) {
         $data['refund_customerbalance_return_enable'] = '1';
         $data['refund_customerbalance_return'] = $orderItem->getOrder()->getBaseGrandTotal();
     }
     return $data;
 }