Add some documentation in w/c

diff --git a/includes/media/PNG.php b/includes/media/PNG.php
index 9e4a403..3f0f7ea 100644 (file)
--- a/includes/media/PNG.php
+++ b/includes/media/PNG.php
@@ -12,7 +12,12 @@
  * @ingroup Media
  */
 class PNGHandler extends BitmapHandler {
-       
+
+       /**
+        * @param File $image
+        * @param string $filename
+        * @return string
+        */
        function getMetadata( $image, $filename ) {
                if ( !isset($image->parsedPNGMetadata) ) {
                        try {