Migrate RainLoop Webmail to use Facebook Graph API instead of FQL

rainloop/v/0.0.0/app/libraries/GuzzleHttp/Adapter/ParallelAdapterInterface.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace GuzzleHttp\Adapter;
+
+/**
+ * Adapter interface used to transfer multiple HTTP requests in parallel.
+ *
+ * Parallel adapters follow the same rules as AdapterInterface except that
+ * RequestExceptions are never thrown in a parallel transfer and parallel
+ * adapters do not return responses.
+ */
+interface ParallelAdapterInterface
+{
+    /**
+     * Transfers multiple HTTP requests in parallel.
+     *
+     * RequestExceptions MUST not be thrown from a parallel transfer.
+     *
+     * @param \Iterator $transactions Iterator that yields TransactionInterface
+     * @param int       $parallel     Max number of requests to send in parallel
+     */
+    public function sendAll(\Iterator $transactions, $parallel);
+}