def METHOD_NAME():
    a = ak.Array([[[0.0, 1.1, 2.2], []], [[3.3, 4.4]]])
    b = ak.Array([[[5.5], [6.6, 7.7, 8.8, 9.9]]])
    c = ak.concatenate([a, b])
    ctt = ak.concatenate([a.layout.to_typetracer(), b.layout.to_typetracer()])
    assert c.to_list() == [
        [[0.0, 1.1, 2.2], []],
        [[3.3, 4.4]],
        [[5.5], [6.6, 7.7, 8.8, 9.9]],
    ]
    assert c.layout.form == ListOffsetForm(
        "i64", ListOffsetForm("i64", NumpyForm("float64"))
    )
    assert c.layout.form == ctt.layout.form