BuildFeed/BuildFeed.Model/BuildGroup.cs

namespace BuildFeed.Model
{
    public struct BuildGroup
    {
        public uint Major { get; set; }
        public uint Minor { get; set; }
        public uint Build { get; set; }
        public uint? Revision { get; set; }

        public override string ToString() => Revision.HasValue
            ? $"{Major}.{Minor}.{Build}.{Revision.Value}"
            : $"{Major}.{Minor}.{Build}";
    }
}