@Override
  public void setOptions(FindOptions options) throws IOException {
    if (expression != null) {
      expression.setOptions(options);
    }
  }
@Test
  public void setOptions() throws IOException {
    FindOptions options = mock(FindOptions.class);
    test.setOptions(options);
    verify(expr).setOptions(options);
    verifyNoMoreInteractions(expr);
  }