added php download of membershipments

vendor/illuminate/contracts/Queue/QueueableEntity.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Illuminate\Contracts\Queue;
+
+interface QueueableEntity
+{
+    /**
+     * Get the queueable identity for the entity.
+     *
+     * @return mixed
+     */
+    public function getQueueableId();
+
+    /**
+     * Get the relationships for the entity.
+     *
+     * @return array
+     */
+    public function getQueueableRelations();
+
+    /**
+     * Get the connection of the entity.
+     *
+     * @return string|null
+     */
+    public function getQueueableConnection();
+}