def METHOD_NAME():
    fp = CRDedupeFilePolicy()
    answer = [
        ("2020-08-25T20:38:36.895321 ", "this is my line of text\nsecond line\n"),
        ("ERROR 2020-08-25T20:38:36.895321 ", "this is my line of text\nsecond line\n"),
    ]
    test_data = [
        "2020-08-25T20:38:36.895321 this is my line of text\nsecond line\n",
        "ERROR 2020-08-25T20:38:36.895321 this is my line of text\nsecond line\n",
    ]
    for i, data in enumerate(test_data):
        c = Chunk(data=data)
        prefix, rest = fp.split_chunk(c)
        assert prefix == answer[i][0]
        assert rest == answer[i][1]