PreviewHandlerProxyCloseAsync - метод

public ValueTask CloseAsync(
	CancellationToken cancellationToken = default
)

Public Function CloseAsync ( 
	Optional cancellationToken As CancellationToken = Nothing
) As ValueTask

public:
virtual ValueTask CloseAsync(
	CancellationToken cancellationToken = CancellationToken()
) sealed

abstract CloseAsync : 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> ValueTask 
override CloseAsync : 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> ValueTask