IOExtensionsWriteAsync(Stream, String, Encoding, CancellationToken) - метод

public static Task WriteAsync(
	this Stream stream,
	string value,
	Encoding encoding = null,
	CancellationToken cancellationToken = default
)

<ExtensionAttribute>
Public Shared Function WriteAsync ( 
	stream As Stream,
	value As String,
	Optional encoding As Encoding = Nothing,
	Optional cancellationToken As CancellationToken = Nothing
) As Task

public:
[ExtensionAttribute]
static Task^ WriteAsync(
	Stream^ stream, 
	String^ value, 
	Encoding^ encoding = nullptr, 
	CancellationToken cancellationToken = CancellationToken()
)

[<ExtensionAttribute>]
static member WriteAsync : 
        stream : Stream * 
        value : string * 
        ?encoding : Encoding * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _encoding = defaultArg encoding null
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> Task