--- a/jaxws/src/java.xml.ws/share/classes/com/sun/xml/internal/ws/transport/Headers.java	Wed Jul 05 21:24:14 2017 +0200
+++ b/jaxws/src/java.xml.ws/share/classes/com/sun/xml/internal/ws/transport/Headers.java	Tue Mar 01 17:19:31 2016 +0300
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -127,5 +127,17 @@
         l.add (value);
         put(key, l);
     }
+    /**
+     * Added to fix issue
+     * putAll() is easier to deal with as it doesn't return anything
+     */
+    public void putAll(Map<? extends String,? extends List<String>> map) {
+        for (String k : map.keySet()) {
+            List<String> list = map.get(k);
+            for (String v : list) {
+                add(k,v);
+            }
+        }
+    }
 
 }