From a8818f6a23f077452e96e6d252c22a0d532aff3c Mon Sep 17 00:00:00 2001
From: Dennis Eichhorn <spl1nes.com@googlemail.com>
Date: Wed, 9 Nov 2022 23:02:52 +0100
Subject: [PATCH] reduce serialization of null models

---
 Models/NullStock.php         | 8 ++++++++
 Models/NullStockLocation.php | 8 ++++++++
 Models/NullStockShelf.php    | 8 ++++++++
 3 files changed, 24 insertions(+)

diff --git a/Models/NullStock.php b/Models/NullStock.php
index b22c200..6eda25d 100755
--- a/Models/NullStock.php
+++ b/Models/NullStock.php
@@ -36,4 +36,12 @@ final class NullStock extends Stock
         $this->id = $id;
         parent::__construct();
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function jsonSerialize() : mixed
+    {
+        return ['id' => $this->id];
+    }
 }
diff --git a/Models/NullStockLocation.php b/Models/NullStockLocation.php
index 755eea4..bbbb650 100755
--- a/Models/NullStockLocation.php
+++ b/Models/NullStockLocation.php
@@ -36,4 +36,12 @@ final class NullStockLocation extends StockLocation
         $this->id = $id;
         parent::__construct();
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function jsonSerialize() : mixed
+    {
+        return ['id' => $this->id];
+    }
 }
diff --git a/Models/NullStockShelf.php b/Models/NullStockShelf.php
index 8f2bc32..37bd350 100755
--- a/Models/NullStockShelf.php
+++ b/Models/NullStockShelf.php
@@ -36,4 +36,12 @@ final class NullStockShelf extends StockShelf
         $this->id = $id;
         parent::__construct();
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function jsonSerialize() : mixed
+    {
+        return ['id' => $this->id];
+    }
 }