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

            if (Country.Length != 0)
            {
                hash ^= Country.GetHashCode();
            }
            if (City.Length != 0)
            {
                hash ^= City.GetHashCode();
            }
            if (checkin_ != null)
            {
                hash ^= Checkin.GetHashCode();
            }
            if (checkout_ != null)
            {
                hash ^= Checkout.GetHashCode();
            }
            if (Rooms != 0)
            {
                hash ^= Rooms.GetHashCode();
            }
            if (_unknownFields != null)
            {
                hash ^= _unknownFields.GetHashCode();
            }
            return(hash);
        }