Improved cache reading

CloudObjects/SDK/ObjectRetriever.php

@@ -146,7 +146,7 @@ class ObjectRetriever implements CustomCacheAndLogInterface {
 			return null;
 		}
 
-		return $cachedData->getOriginalResponse()->getBody()->getContents();
+		return (string)$cachedData->getResponse()->getBody(true);
 	}
 
 	private function putIntoCache($id, $data, $ttl) {