Make it easier to create non-aggregate root aggregate roots...

src/AggregateRoot/AsNotAnAggregateRootBehavior.php

@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Dflydev\EventSauce\Support\AggregateRoot;
+
+use EventSauce\EventSourcing\AggregateRoot;
+use EventSauce\EventSourcing\AggregateRootId;
+use EventSauce\EventSourcing\AggregateRootId as AggregateRootIdType;
+use Generator;
+
+/**
+ * @template T1 of AggregateRoot
+ * @template T2 of AggregateRootId
+ */
+trait AsNotAnAggregateRootBehavior
+{
+    public function aggregateRootVersion(): int
+    {
+        throw new \RuntimeException('Aggregate root version is not implemented');
+    }
+
+    public function releaseEvents(): array
+    {
+        throw new \RuntimeException('Aggregate root tracks no events');
+    }
+
+    public static function reconstituteFromEvents(AggregateRootIdType $aggregateRootId, Generator $events): static
+    {
+        throw new \RuntimeException('Aggregate root cannot be reconstituted from events');
+    }
+}