/// <summary>
/// The <c>GetDomainSid</c> function receives a security identifier (SID) and returns a SID representing the domain of that SID.
/// </summary>
/// <param name="pSid">A pointer to the SID to examine.</param>
/// <returns>An allocated safe pointer to a SID representing the domain.</returns>
public static AdvApi32.SafePSID GetDomainSid(this PSID pSid)
{
Win32Error.ThrowLastErrorIfFalse(AdvApi32.GetWindowsAccountDomainSid(pSid, out var pDomSid));
return(pDomSid);
}