namespace rail { public class RailID : RailComparableID { public RailID() { } public RailID(ulong id) : base(id) { } public EnumRailIDDomain GetDomain() { if ((int)(id_ >> 56) == 1) { return EnumRailIDDomain.kRailIDDomainPublic; } return EnumRailIDDomain.kRailIDDomainInvalid; } } }