@Test
    public void mergeSameMailingLists()
    {
        MailingList mailingList = new MailingList();
        mailingList.setName( "name" );

        Model target = new Model();
        target.setMailingLists( Arrays.asList( mailingList ) );

        Model source = new Model();
        source.setMailingLists( Arrays.asList( mailingList ) );

        modelMerger.merge( target, source, true, null );