Update Stream.php

Author: magnusnordlander

Source/Stream.php

@@ -155,7 +155,7 @@ public function __construct(string $streamName, string $context = null, bool $wa
      * If the stream does not exist, try to open it by calling the
      * $handler->_open() method.
      */
-    final private static function &_getStream(
+    private static function &_getStream(
         string $streamName,
         Stream $handler,
         string $context = null