def METHOD_NAME(self):
    # http://bob.nem.ninja:8765/#/aggregate/6a55471b17159e5b6cd579c421e95a4e39d92e3f78b0a55ee337e785a601d3a2
    m = _create_msg(NEM_NETWORK_TESTNET, 0, 22000000, 0, 2, 0)
    t = serialize_aggregate_modification(
        m.transaction,
        m.aggregate_modification,
        unhexlify(
            "462ee976890916e54fa825d26bdd0235f5eb5b6a143c199ab0ae5ee9328e08ce"
        ),
    )
    write_cosignatory_modification(
        t,
        1,
        unhexlify(
            "994793ba1c789fa9bdea918afc9b06e2d0309beb1081ac5b6952991e4defd324"
        ),
    )
    write_cosignatory_modification(
        t,
        1,
        unhexlify(
            "c54d6e33ed1446eedd7f7a80a588dd01857f723687a09200c1917d5524752f8b"
        ),
    )
    self.assertEqual(
        hashlib.sha3_256(t, keccak=True).digest(),
        unhexlify(
            "6a55471b17159e5b6cd579c421e95a4e39d92e3f78b0a55ee337e785a601d3a2"
        ),
    )
    # http://chain.nem.ninja/#/aggregate/cc64ca69bfa95db2ff7ac1e21fe6d27ece189c603200ebc9778d8bb80ca25c3c
    m = _create_msg(NEM_NETWORK_MAINNET, 0, 40000000, 0, 5, 0)
    t = serialize_aggregate_modification(
        m.transaction,
        m.aggregate_modification,
        unhexlify(
            "f41b99320549741c5cce42d9e4bb836d98c50ed5415d0c3c2912d1bb50e6a0e5"
        ),
    )
    write_cosignatory_modification(
        t,
        1,
        unhexlify(
            "1fbdbdde28daf828245e4533765726f0b7790e0b7146e2ce205df3e86366980b"
        ),
    )
    write_cosignatory_modification(
        t,
        1,
        unhexlify(
            "f94e8702eb1943b23570b1b83be1b81536df35538978820e98bfce8f999e2d37"
        ),
    )
    write_cosignatory_modification(
        t,
        1,
        unhexlify(
            "826cedee421ff66e708858c17815fcd831a4bb68e3d8956299334e9e24380ba8"
        ),
    )
    write_cosignatory_modification(
        t,
        1,
        unhexlify(
            "719862cd7d0f4e875a6a0274c9a1738f38f40ad9944179006a54c34724c1274d"
        ),
    )
    write_cosignatory_modification(
        t,
        1,
        unhexlify(
            "43aa69177018fc3e2bdbeb259c81cddf24be50eef9c5386db51d82386c41475a"
        ),
    )
    self.assertEqual(
        hashlib.sha3_256(t, keccak=True).digest(),
        unhexlify(
            "cc64ca69bfa95db2ff7ac1e21fe6d27ece189c603200ebc9778d8bb80ca25c3c"
        ),
    )