From a0092a6c8693b06a902077446350b0a2244c054c Mon Sep 17 00:00:00 2001
From: Dennis Eichhorn <spl1nes.com@googlemail.com>
Date: Tue, 22 Mar 2022 17:34:58 +0100
Subject: [PATCH] fixed php 8.1 type bugs

---
 Models/Bill.php         | 2 +-
 Models/BillElement.php  | 2 +-
 Models/BillTypeL11n.php | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Models/Bill.php b/Models/Bill.php
index bdc6a76..7fccbec 100755
--- a/Models/Bill.php
+++ b/Models/Bill.php
@@ -763,7 +763,7 @@ class Bill implements \JsonSerializable
     /**
      * {@inheritdoc}
      */
-    public function jsonSerialize()
+    public function jsonSerialize() : mixed
     {
         return $this->toArray();
     }
diff --git a/Models/BillElement.php b/Models/BillElement.php
index a5bf65e..2a3278d 100755
--- a/Models/BillElement.php
+++ b/Models/BillElement.php
@@ -187,7 +187,7 @@ class BillElement implements \JsonSerializable
     /**
      * {@inheritdoc}
      */
-    public function jsonSerialize()
+    public function jsonSerialize() : mixed
     {
         return $this->toArray();
     }
diff --git a/Models/BillTypeL11n.php b/Models/BillTypeL11n.php
index a3f814d..a1c8f8e 100755
--- a/Models/BillTypeL11n.php
+++ b/Models/BillTypeL11n.php
@@ -129,7 +129,7 @@ class BillTypeL11n implements \JsonSerializable, ArrayableInterface
     /**
      * {@inheritdoc}
      */
-    public function jsonSerialize()
+    public function jsonSerialize() : mixed
     {
         return $this->toArray();
     }