public static void PSID()
{
AdvApi32.PSID pSid;
string dn;
AdvApi32.SID_NAME_USE snu;
AdvApi32.LookupAccountName(null, "SYSTEM", out pSid, out dn, out snu);
var newSid = AdvApi32.PSID.Init(AdvApi32.SECURITY_NT_AUTHORITY, 0x12); // S-1-5-18
AddTestResult(null, "Lookup SYSTEM == Built SYSTEM", pSid == newSid);
}