def METHOD_NAME():
    """Tests creation of pairwise panel trafo pipeliens using mul dunder."""
    t = EditDist()
    idx_sub = ["var_1", "var_2"]
    X1_sub = X1.loc[:, idx_sub]
    X2_sub = X2.loc[:, idx_sub]
    # compare manual subsetting with dunder subsetting
    t_sub = t[idx_sub]
    # manual: subset then transform
    m_manual = t.transform(X1_sub, X2_sub)
    # dunder: apply the subsetted transformer
    m_dunder = t_sub.transform(X1, X2)
    assert np.allclose(m_manual, m_dunder)
    # this should not be the same as distance on all columns
    m = t.transform(X1, X2)
    assert not np.allclose(m_dunder, m)