@Test
  public void testFeatureMap() {
    assertEquals(0L, support.dataStoreSize());

    PrimaryObject object = ModelFactory.eINSTANCE.createPrimaryObject();
    object.setId(6);
    object.setName("foo");

    object.getFeatureMapAttributeType1().add("Hello");
    object.getFeatureMapAttributeType2().add("World");

    assertEquals(2, object.getFeatureMapAttributeCollection().size());
    assertEquals(1, object.getFeatureMapAttributeType1().size());
    assertEquals(1, object.getFeatureMapAttributeType2().size());

    support.saveObject(object);

    assertEquals(5L, support.dataStoreSize());

    support.checkObject(object);
  }
  @Test
  public void testUnsettableAttributeSetToNull() throws IOException {
    assertEquals(0L, support.dataStoreSize());

    PrimaryObject object = ModelFactory.eINSTANCE.createPrimaryObject();
    object.setId(5);
    object.setUnsettableAttribute(null);

    support.saveObject(object);

    assertEquals(2L, support.dataStoreSize());

    Resource resource = support.createResource("uri=" + ETripleEcoreUtil.getID(object));
    resource.load(null);

    PrimaryObject loaded = (PrimaryObject) resource.getContents().get(0);

    assertTrue(loaded.isSetUnsettableAttribute());
    assertEquals(loaded.getUnsettableAttribute(), null);
  }