MailSenderStartAsync - метод

public Task StartAsync(
	ConcurrentQueue<OutboxMessage> queue,
	CancellationToken cancellationToken = default
)

Public Function StartAsync ( 
	queue As ConcurrentQueue(Of OutboxMessage),
	Optional cancellationToken As CancellationToken = Nothing
) As Task

public:
Task^ StartAsync(
	ConcurrentQueue<OutboxMessage^>^ queue, 
	CancellationToken cancellationToken = CancellationToken()
)

member StartAsync : 
        queue : ConcurrentQueue<OutboxMessage> * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> Task