Authenticate User for specific SiteManager instance, if successful, set CurrentUserState on SiteManager, and create ILicenseManager instance and set on the SiteManager's LicenseManager property. License and seating are checked in the same time.

bool Authenticate(
	string userName,
	string Password,
	ISiteManager siteManager,
	out IUserState currentUserState
)

Function Authenticate ( _
	userName As String, _
	Password As String, _
	siteManager As ISiteManager, _
	<OutAttribute> ByRef currentUserState As IUserState _
) As Boolean

bool Authenticate(
	String^ userName, 
	String^ Password, 
	ISiteManager^ siteManager, 
	[OutAttribute] IUserState^% currentUserState
)