✅ Code highlighting issue in Rider with Int128 and UInt128 types

        public static UInt128 operator +(UInt128 left, UInt128 right)
        {
            // For unsigned addition, we can detect overflow by checking `(x + y) < x`
            // This gives us the carry to add to upper to compute the correct result

            ulong lower = left._lower + right._lower;
            ulong carry = (lower < left._lower) ? 1UL : 0UL;

            ulong upper = left._upper + right._upper + carry;
            return new UInt128(upper, lower);
        }

        public static Int128 operator +(Int128 left, Int128 right)
        {
            // For unsigned addition, we can detect overflow by checking `(x + y) < x`
            // This gives us the carry to add to upper to compute the correct result

            ulong lower = left._lower + right._lower;
            ulong carry = (lower < left._lower) ? 1UL : 0UL;

            ulong upper = left._upper + right._upper + carry;
            return new Int128(upper, lower);
        }