ForumControlViewModelSelectTopicAsync - метод

Public Function SelectTopicAsync ( 
	topicID As Guid,
	Optional messageID As Guid? = Nothing,
	Optional lastReadMessageTime As DateTime? = Nothing,
	Optional isNeedUpdateLastReadMessageTime As Boolean = true,
	Optional forceIsLoaded As Boolean = false,
	Optional cancellationToken As CancellationToken = Nothing
) As Task

public:
Task^ SelectTopicAsync(
	Guid topicID, 
	Nullable<Guid> messageID = nullptr, 
	Nullable<DateTime> lastReadMessageTime = nullptr, 
	bool isNeedUpdateLastReadMessageTime = true, 
	bool forceIsLoaded = false, 
	CancellationToken cancellationToken = CancellationToken()
)

member SelectTopicAsync : 
        topicID : Guid * 
        ?messageID : Nullable<Guid> * 
        ?lastReadMessageTime : Nullable<DateTime> * 
        ?isNeedUpdateLastReadMessageTime : bool * 
        ?forceIsLoaded : bool * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _messageID = defaultArg messageID null
        let _lastReadMessageTime = defaultArg lastReadMessageTime null
        let _isNeedUpdateLastReadMessageTime = defaultArg isNeedUpdateLastReadMessageTime true
        let _forceIsLoaded = defaultArg forceIsLoaded false
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> Task