def METHOD_NAME(protocol):
    """Regression test for https://github.com/astropy/astropy/issues/4098"""
    a = np.zeros((3, 2))
    c = Column(a, name="a")
    cs = pickle.dumps(c)
    cp = pickle.loads(cs)
    assert np.all(c == cp)
    assert c.shape == cp.shape
    assert cp.attrs_equal(c)
    assert repr(c) == repr(cp)