def METHOD_NAME(create):
    """Test comment line to a relationship item connection and unlink.
    Demonstrates defect #103.
    """
    clazz1 = create(ClassItem, UML.Class)
    clazz2 = create(ClassItem, UML.Class)
    gen = create(GeneralizationItem)
    connect(gen, gen.head, clazz1)
    connect(gen, gen.tail, clazz2)
    assert gen.subject
    # now, connect comment to a generalization (relationship)
    comment = create(CommentItem, Comment)
    line = create(CommentLineItem)
    connect(line, line.head, comment)
    connect(line, line.tail, gen)
    assert gen.subject in comment.subject.annotatedElement
    assert comment.subject in gen.subject.comment
    gen.unlink()
    assert not comment.subject.annotatedElement
    assert gen.subject is None