private static GroupAttributes GetAttributes(Sid sid)
 {
     if (NtSecurity.IsServiceSid(sid))
     {
         return(GroupAttributes.Owner | GroupAttributes.Enabled);
     }
     else if (NtSecurity.IsLogonSessionSid(sid))
     {
         return(GroupAttributes.Enabled | GroupAttributes.EnabledByDefault | GroupAttributes.Mandatory | GroupAttributes.LogonId);
     }
     return(GroupAttributes.Enabled | GroupAttributes.EnabledByDefault | GroupAttributes.Mandatory);
 }