src/java.xml.ws/share/classes/com/sun/xml/internal/ws/transport/Headers.java

@@ -1,7 +1,7 @@
 /*
- * 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
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -125,7 +125,19 @@
     public void set (String key, String value) {
         LinkedList<String> l = new LinkedList<String>();
         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);
+            }
+        }
+    }
 
 }