public int CompareTo(UnityVersion other)
        {
            var mmrR = MMR.CompareTo(other.MMR);

            if (mmrR != 0)
            {
                return(mmrR);
            }

            return(0);
        }
        public int CompareTo(PackageVersion other)
        {
            var mmrR = MMR.CompareTo(other.MMR);

            if (mmrR != 0)
            {
                return(mmrR);
            }

            var previewR = Preview.CompareTo(other.Preview);

            if (previewR != 0)
            {
                return(previewR);
            }

            return(0);
        }