Implemented optimistic lock draft

application/src/Entity/Attribut/VersionAttribut.php

@@ -0,0 +1,25 @@
+<?php
+namespace App\Entity\Attribut;
+
+/**
+ *
+ * @author kevinfrantz
+ *        
+ */
+trait VersionAttribut
+{
+    /**
+     * 
+     * @var int
+     */
+    protected $version;
+    
+    public function setVersion(int $version):void{
+        $this->version = $version;
+    }
+    
+    public function getVersion():int{
+        return $this->version;
+    }
+}
+