HeaderValuesMap implements Map<String, String[]> { public void putAll(Map<? extends String, ? extends String[]> map) { throw new UnsupportedOperationException(); } HeaderValuesMap(EnumeratedValuesExtractor request); void clear(); boolean containsKey(Object key); boolean containsValue(Object value); Set<Map.Entry<String, String[]>> entrySet(); @Override boolean equals(Object o); String[] get(Object key); @Override int hashCode(); boolean isEmpty(); Set<String> keySet(); String[] put(String key, String[] value); void putAll(Map<? extends String, ? extends String[]> map); String[] remove(Object key); int size(); Collection<String[]> values();  }
@Test(expected = UnsupportedOperationException.class) public void testPutAll() { map.putAll(new HashMap<String, String[]>()); }