Merge branch '5.2' into 5.x

* 5.2:
  match example with description above

Author: OskarStark

components/serializer.rst

@@ -1601,7 +1601,7 @@ and ``BitBucketCodeRepository`` classes:
          *    "bitbucket"="App\BitBucketCodeRepository"
          * })
          */
-        interface CodeRepository
+        abstract class CodeRepository
         {
             // ...
         }