Implemented Members attribut and optimized membership

application/src/Entity/Attribut/MembersAttributInterface.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Entity\Attribut;
+
+use Doctrine\Common\Collections\Collection;
+use App\Entity\Source\SourceInterface;
+
+/**
+ * @author kevinfrantz
+ */
+interface MembersAttributInterface
+{
+    /**
+     * @param Collection|SourceInterface[] $members
+     */
+    public function setMembers(Collection $members): void;
+
+    /**
+     * @return Collection|SourceInterface[]
+     */
+    public function getMembers(): Collection;
+}