From 4f2aa1d5ca396336c0f550e2e03340ca8cc479e4 Mon Sep 17 00:00:00 2001
From: Dennis Eichhorn <spl1nes.com@googlemail.com>
Date: Thu, 10 Sep 2020 20:18:46 +0200
Subject: [PATCH] implement immutable datetime

---
 Models/BatchPosting.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Models/BatchPosting.php b/Models/BatchPosting.php
index ef10d4a..0ca274c 100644
--- a/Models/BatchPosting.php
+++ b/Models/BatchPosting.php
@@ -119,7 +119,7 @@ class BatchPosting implements \Countable
      *
      * @since 1.0.0
      */
-    public function getCreatedAt() : \DateTime
+    public function getCreatedAt() : \DateTimeInterface
     {
         return $this->created;
     }