@Override
  public MutablePathKeys getPathKeys()
  {
    return _pathKeys;
  }
@Test(expectedExceptions = UnsupportedOperationException.class)
  public void testUnmodifiablePathKeysMap() throws RestLiSyntaxException
  {
    final ResourceContextImpl context = new ResourceContextImpl();
    context.getPathKeys().getKeyMap().put("should", "puke");
  }