From 6db66f4753b2e5eacf5bf5df82daad49d0b25c06 Mon Sep 17 00:00:00 2001
From: Doug Stevenson <doug.stevenson@pgi.com>
Date: Thu, 9 Jul 2015 13:29:40 -0700
Subject: [PATCH] chore(S3/StreamWrapper) Add comment about implicit
 functionality.

---
 src/S3/StreamWrapper.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/S3/StreamWrapper.php b/src/S3/StreamWrapper.php
index 241370e956..333956d073 100644
--- a/src/S3/StreamWrapper.php
+++ b/src/S3/StreamWrapper.php
@@ -515,6 +515,8 @@ private function formatKey($key)
      */
     public function rename($path_from, $path_to)
     {
+        // PHP will not allow rename across wrapper types, so we can safely
+        // assume $path_from and $path_to have the same protocol
         $this->initProtocol($path_from);
         $partsFrom = $this->withPath($path_from);
         $partsTo = $this->withPath($path_to);