Added composer

vendor/guzzlehttp/guzzle/src/BodySummarizerInterface.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace GuzzleHttp;
+
+use Psr\Http\Message\MessageInterface;
+
+interface BodySummarizerInterface
+{
+    /**
+     * Returns a summarized message body.
+     */
+    public function summarize(MessageInterface $message): ?string;
+}