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

            if (semver_ != null)
            {
                hash ^= Semver.GetHashCode();
            }
            if (custom_ != null)
            {
                hash ^= Custom.GetHashCode();
            }
            if (_unknownFields != null)
            {
                hash ^= _unknownFields.GetHashCode();
            }
            return(hash);
        }