@Override
  public String getQualifier() {
    if (isRoot()) {
      return Qualifiers.VIEW;
    }
    return Qualifiers.SUBVIEW;
  }
@Test
  void getQualifier_whenRoot_shouldReturnVW() {
    PortfolioDto dto = new PortfolioDto();
    assertThat(dto.getQualifier()).isEqualTo(Qualifiers.VIEW);
  }