@Test
  public void testGetRelationsByBaseName() {
    try {
      // dts
      assertEquals(1, applicationElement.getRelationsByBaseName("test").length);
      assertEquals(1, applicationElement.getRelationsByBaseName("measurement_quantities").length);
      assertEquals(1, applicationElement.getRelationsByBaseName("units_under_test").length);

      // audifahrzeug
      ApplicationElement aeFzg =
          aoSession.getApplicationStructure().getElementByName("audifahrzeug");
      assertEquals(5, aeFzg.getRelationsByBaseName("children").length);

    } catch (AoException e) {
      fail(e.reason);
    }
  }