diff --git a/Models/CashRegister.php b/Models/CashRegister.php
index e69de29..1406043 100644
--- a/Models/CashRegister.php
+++ b/Models/CashRegister.php
@@ -0,0 +1,27 @@
+<?php
+/**
+ * Jingga
+ *
+ * PHP Version 8.1
+ *
+ * @package   Modules\CashManagement\Models
+ * @copyright Dennis Eichhorn
+ * @license   OMS License 2.0
+ * @version   1.0.0
+ * @link      https://jingga.app
+ */
+declare(strict_types=1);
+
+namespace Modules\CashManagement\Models;
+
+/**
+ * Cash register.
+ *
+ * @package Modules\CashManagement\Models
+ * @license OMS License 2.0
+ * @link    https://jingga.app
+ * @since   1.0.0
+ */
+class CashRegister
+{
+}
diff --git a/Models/CashRegisterMapper.php b/Models/CashRegisterMapper.php
index e69de29..ad7607a 100644
--- a/Models/CashRegisterMapper.php
+++ b/Models/CashRegisterMapper.php
@@ -0,0 +1,27 @@
+<?php
+/**
+ * Jingga
+ *
+ * PHP Version 8.1
+ *
+ * @package   Modules\CashManagement\Models
+ * @copyright Dennis Eichhorn
+ * @license   OMS License 2.0
+ * @version   1.0.0
+ * @link      https://jingga.app
+ */
+declare(strict_types=1);
+
+namespace Modules\CashManagement\Models;
+
+/**
+ * Cash register.
+ *
+ * @package Modules\CashManagement\Models
+ * @license OMS License 2.0
+ * @link    https://jingga.app
+ * @since   1.0.0
+ */
+class CashRegisterMapper
+{
+}
diff --git a/Models/NullCashRegister.php b/Models/NullCashRegister.php
index e69de29..974c7d6 100644
--- a/Models/NullCashRegister.php
+++ b/Models/NullCashRegister.php
@@ -0,0 +1,27 @@
+<?php
+/**
+ * Jingga
+ *
+ * PHP Version 8.1
+ *
+ * @package   Modules\CashManagement\Models
+ * @copyright Dennis Eichhorn
+ * @license   OMS License 2.0
+ * @version   1.0.0
+ * @link      https://jingga.app
+ */
+declare(strict_types=1);
+
+namespace Modules\CashManagement\Models;
+
+/**
+ * Null model.
+ *
+ * @package Modules\CashManagement\Models
+ * @license OMS License 2.0
+ * @link    https://jingga.app
+ * @since   1.0.0
+ */
+class NullCashRegister extends CashRegister
+{
+}