added php download of membershipments

vendor/illuminate/contracts/Queue/Monitor.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace Illuminate\Contracts\Queue;
+
+interface Monitor
+{
+    /**
+     * Register a callback to be executed on every iteration through the queue loop.
+     *
+     * @param  mixed  $callback
+     * @return void
+     */
+    public function looping($callback);
+
+    /**
+     * Register a callback to be executed when a job fails after the maximum amount of retries.
+     *
+     * @param  mixed  $callback
+     * @return void
+     */
+    public function failing($callback);
+
+    /**
+     * Register a callback to be executed when a daemon queue is stopping.
+     *
+     * @param  mixed  $callback
+     * @return void
+     */
+    public function stopping($callback);
+}