ICardExternalSourceLogicReadCardAsync - метод

Function ReadCardAsync ( 
	sourceContentProvider As ISourceContentProvider,
	format As CardFileFormat,
	validationResult As IValidationResultBuilder,
	Optional cancellationToken As CancellationToken = Nothing
) As Task(Of (Header As CardHeader, Request As CardStoreRequest, ReadNextFileFuncAsync As Func(Of Long, CancellationToken, ValueTask(Of SubStream))))

Task<ValueTuple<CardHeader^, CardStoreRequest^, Func<long long, CancellationToken, ValueTask<SubStream^>>^>>^ ReadCardAsync(
	ISourceContentProvider^ sourceContentProvider, 
	CardFileFormat format, 
	IValidationResultBuilder^ validationResult, 
	CancellationToken cancellationToken = CancellationToken()
)

abstract ReadCardAsync : 
        sourceContentProvider : ISourceContentProvider * 
        format : CardFileFormat * 
        validationResult : IValidationResultBuilder * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> Task<ValueTuple<CardHeader, CardStoreRequest, Func<int64, CancellationToken, ValueTask<SubStream>>>>