feat(Subscription): add payloadNotIncluded to message delivery

Closes #413

src/Core/Model/Subscription/MessageDelivery.php

@@ -30,6 +30,8 @@
  * @method MessageDelivery setCreatedAt(DateTime $createdAt = null)
  * @method DateTimeDecorator getLastModifiedAt()
  * @method MessageDelivery setLastModifiedAt(DateTime $lastModifiedAt = null)
+ * @method PayloadNotIncluded getPayloadNotIncluded()
+ * @method MessageDelivery setPayloadNotIncluded(PayloadNotIncluded $payloadNotIncluded = null)
  */
 class MessageDelivery extends Delivery
 {
@@ -51,13 +53,28 @@ public function fieldDefinitions()
                     static::TYPE => DateTime::class,
                     static::DECORATOR => DateTimeDecorator::class
                 ],
+                'payloadNotIncluded' => [static::TYPE => PayloadNotIncluded::class],
             ]
         );
         return $definition;
     }
 
+    /**
+     * @return Message
+     */
     public function getMessage()
     {
         return Message::fromArray($this->rawData);
     }
+
+    /**
+     * @return string
+     */
+    public function getMessageType()
+    {
+        if (is_null($this->getPayloadNotIncluded())) {
+            return $this->getMessage()->getType();
+        }
+        return $this->getPayloadNotIncluded()->getPayloadType();
+    }
 }

src/Core/Model/Subscription/MessageSubscription.php

@@ -21,7 +21,7 @@ public function fieldDefinitions()
     {
         return [
             'resourceTypeId' => [static::TYPE => 'string'],
-            'types' => [static::TYPE => 'array']
+            'types' => [static::TYPE => 'array'],
         ];
     }
 }

src/Core/Model/Subscription/PayloadNotIncluded.php

@@ -0,0 +1,26 @@
+<?php
+/**
+ */
+
+namespace Commercetools\Core\Model\Subscription;
+
+use Commercetools\Core\Model\Common\JsonObject;
+
+/**
+ * @package Commercetools\Core\Model\Subscription
+ *
+ * @method string getReason()
+ * @method PayloadNotIncluded setReason(string $reason = null)
+ * @method string getPayloadType()
+ * @method PayloadNotIncluded setPayloadType(string $payloadType = null)
+ */
+class PayloadNotIncluded extends JsonObject
+{
+    public function fieldDefinitions()
+    {
+        return [
+            'reason' => [static::TYPE => 'string'],
+            'payloadType' => [static::TYPE => 'string'],
+        ];
+    }
+}