ICardActionDescriptionBuilderAppendHeaderAsync(StringBuilder, CardGetFileContentRequest, CancellationToken) - метод

ValueTask<StringBuilder> AppendHeaderAsync(
	StringBuilder builder,
	CardGetFileContentRequest request,
	CancellationToken cancellationToken = default
)

Function AppendHeaderAsync ( 
	builder As StringBuilder,
	request As CardGetFileContentRequest,
	Optional cancellationToken As CancellationToken = Nothing
) As ValueTask(Of StringBuilder)

ValueTask<StringBuilder^> AppendHeaderAsync(
	StringBuilder^ builder, 
	CardGetFileContentRequest^ request, 
	CancellationToken cancellationToken = CancellationToken()
)

abstract AppendHeaderAsync : 
        builder : StringBuilder * 
        request : CardGetFileContentRequest * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> ValueTask<StringBuilder>