@Test
public void checkTypeSimpleTopLevelCollection() {

    // top level collection
    SimpleTypeImpl topLevelCollection = getSimpleCollection();
    DMNTypeServiceImpl.ErrorHolder errorHolder = new DMNTypeServiceImpl.ErrorHolder();
    dmnTypeServiceImpl.checkTypeSupport(topLevelCollection, errorHolder, "fieldName");
    assertEquals(0, errorHolder.getMultipleNestedObject().size());
    assertEquals(0, errorHolder.getMultipleNestedCollection().size());
}