@Override
  public MutablePathKeys getPathKeys()
  {
    return _pathKeys;
  }
@Test
  public void testPathKeysImpl() throws RestLiSyntaxException
  {
    final ResourceContextImpl context = new ResourceContextImpl();
    MutablePathKeys mutablePathKeys = context.getPathKeys();
    mutablePathKeys.append("aKey", "aValue")
        .append("bKey", "bValue")
        .append("cKey", "cValue");

    Assert.assertEquals(mutablePathKeys.getKeyMap().size(), 3);
  }