INotificationSubscriptionServiceDeleteAllSubscriptionsAsync - метод

Function DeleteAllSubscriptionsAsync ( 
	Optional userID As Guid? = Nothing,
	Optional cardID As Guid? = Nothing,
	Optional notificationTypeID As Guid? = Nothing,
	Optional cardTypeID As Guid? = Nothing,
	Optional deleteOnlySubscribtions As Boolean = false,
	Optional cancellationToken As CancellationToken = Nothing
) As Task

Task^ DeleteAllSubscriptionsAsync(
	Nullable<Guid> userID = nullptr, 
	Nullable<Guid> cardID = nullptr, 
	Nullable<Guid> notificationTypeID = nullptr, 
	Nullable<Guid> cardTypeID = nullptr, 
	bool deleteOnlySubscribtions = false, 
	CancellationToken cancellationToken = CancellationToken()
)

abstract DeleteAllSubscriptionsAsync : 
        ?userID : Nullable<Guid> * 
        ?cardID : Nullable<Guid> * 
        ?notificationTypeID : Nullable<Guid> * 
        ?cardTypeID : Nullable<Guid> * 
        ?deleteOnlySubscribtions : bool * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _userID = defaultArg userID null
        let _cardID = defaultArg cardID null
        let _notificationTypeID = defaultArg notificationTypeID null
        let _cardTypeID = defaultArg cardTypeID null
        let _deleteOnlySubscribtions = defaultArg deleteOnlySubscribtions false
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> Task