def METHOD_NAME():
    item = Markdown("First")
    override = Markdown("Second")
    template = ReactTemplate()
    template.main[0, 0] = item
    template.main[0, 0] = override
    objs = list(template._render_items.values())[4:]
    assert len(objs) == 1
    ((obj, tags),) = objs
    assert obj.object == "Second"
    assert tags == ['main']