public override int GetHashCode()
        {
            int hash = 1;

            if (NumShards != 0)
            {
                hash ^= NumShards.GetHashCode();
            }
            if (Endianness != 0)
            {
                hash ^= Endianness.GetHashCode();
            }
            if (version_ != null)
            {
                hash ^= Version.GetHashCode();
            }
            return(hash);
        }