StringDictionaryMapperTryMapAsyncTTarget, TKey - метод

<ExtensionAttribute>
Public Shared Function TryMapAsync(Of TTarget, TKey) ( 
	<NotNullAttribute> source As StringDictionaryMapper(Of TTarget),
	<NotNullAttribute> sourceKey As String,
	<NotNullAttribute> targetKey As Expression(Of Func(Of TTarget, TKey)),
	<NotNullAttribute> convertSourceValueAsync As TryConverterAsync(Of TKey),
	Optional cancellationToken As CancellationToken = Nothing
) As ValueTask

public:
[ExtensionAttribute]
generic<typename TTarget, typename TKey>
static ValueTask TryMapAsync(
	[NotNullAttribute] StringDictionaryMapper<TTarget>^ source, 
	[NotNullAttribute] String^ sourceKey, 
	[NotNullAttribute] Expression<Func<TTarget, TKey>^>^ targetKey, 
	[NotNullAttribute] TryConverterAsync<TKey>^ convertSourceValueAsync, 
	CancellationToken cancellationToken = CancellationToken()
)

[<ExtensionAttribute>]
static member TryMapAsync : 
        [<NotNullAttribute>] source : StringDictionaryMapper<'TTarget> * 
        [<NotNullAttribute>] sourceKey : string * 
        [<NotNullAttribute>] targetKey : Expression<Func<'TTarget, 'TKey>> * 
        [<NotNullAttribute>] convertSourceValueAsync : TryConverterAsync<'TKey> * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> ValueTask