public void Fork_there_and_back()
        {
            Fork        container = new Fork(new ForkVersion(new byte[] { 0x01, 0x00, 0x00, 0x00 }), new ForkVersion(new byte[] { 0x02, 0x00, 0x00, 0x00 }), new Epoch(3));
            Span <byte> encoded   = new byte[Fork.SszLength];

            Ssz.Encode(encoded, container);
            Fork decoded = Ssz.DecodeFork(encoded);

            Assert.AreEqual(container, decoded);

            Merkle.Ize(out UInt256 root, container);
        }