IOExtensionsReadStringAsync - метод

public static Task<string> ReadStringAsync(
	this Stream stream,
	Encoding encoding = null,
	CancellationToken cancellationToken = default
)

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

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

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