AC-10042::/V1/transactions REST API returns error when parent_txn_id = txn_id

Author: AshishKumarPundeer

app/code/Magento/Sales/Model/ResourceModel/Order/Payment/Transaction.php

@@ -11,7 +11,6 @@
 /**
  * Sales transaction resource model
  *
- * @author      Magento Core Team <core@magentocommerce.com>
  */
 class Transaction extends EntityAbstract implements TransactionResourceInterface
 {
@@ -152,7 +151,7 @@ protected function _beforeSave(\Magento\Framework\Model\AbstractModel $transacti
             }*/
         } else {
             $oldParentTxnId = $this->getParentTxnId($orderId);
-            if($oldParentTxnId) {
+            if ($oldParentTxnId) {
                 $transaction->setData('parent_txn_id', $oldParentTxnId);
             }
         }
@@ -220,7 +219,8 @@ private function _getLoadByUniqueKeySelect($orderId, $paymentId, $txnId, $column
      * Retrieve transaction by the unique key of order_id
      * @param int $orderId
      */
-    protected function getParentTxnId($orderId) {
+    protected function getParentTxnId($orderId)
+    {
         $connection = $this->getConnection();
         $select = $connection->select()->from(
             $this->getMainTable(),