def METHOD_NAME():
    a1 = ak.Array(np.array([[0.0, 1.1], [2.2, 3.3]]))
    a2 = ak.from_json("[[4.4, 5.5, 6.6], [7.7, 8.8, 9.9]]")
    assert isinstance(a1.layout, ak.contents.NumpyArray)
    a2 = ak.to_regular(a2, axis=1)
    c = ak.concatenate([a1, a2], axis=1)
    assert c.to_list() == [[0.0, 1.1, 4.4, 5.5, 6.6], [2.2, 3.3, 7.7, 8.8, 9.9]]
    assert c.type == ArrayType(RegularType(NumpyType("float64"), 5), 2)