Fixes #1.

devtools/php/php_cs.dist

@@ -37,6 +37,7 @@ $rules = [
     'phpdoc_order'                              => true,
     'semicolon_after_instruction'               => true,
     'yoda_style'                                => false,
+    'self_accessor'                             => false,
 
     'header_comment' => [
         'commentType' => 'comment',

src/Model/UploadedFileInterface.php

@@ -359,5 +359,5 @@ interface UploadedFileInterface
      *
      * @api
      */
-    public function hasSameContent(self $other);
+    public function hasSameContent(UploadedFileInterface $other);
 }