CreateDialogFormFuncAsync - делегат

Public Delegate Function CreateDialogFormFuncAsync ( 
	dialogName As String,
	Optional formAlias As String = Nothing,
	Optional formCreationOptions As FormCreationOptions = FormCreationOptions.None,
	Optional modifyResponseAsync As Func(Of CardNewResponse, CancellationToken, ValueTask) = Nothing,
	Optional modifyModelAsync As Func(Of ICardModel, CancellationToken, ValueTask) = Nothing,
	Optional typeFilter As Func(Of IReadOnlyList(Of CardType), String, IEnumerable(Of CardType)) = Nothing,
	Optional cancellationToken As CancellationToken = Nothing
) As ValueTask(Of (Form As IFormViewModelBase, Model As ICardModel))

public delegate ValueTask<ValueTuple<IFormViewModelBase^, ICardModel^>> CreateDialogFormFuncAsync(
	String^ dialogName, 
	String^ formAlias = nullptr, 
	FormCreationOptions formCreationOptions = FormCreationOptions::None, 
	Func<CardNewResponse^, CancellationToken, ValueTask>^ modifyResponseAsync = nullptr, 
	Func<ICardModel^, CancellationToken, ValueTask>^ modifyModelAsync = nullptr, 
	Func<IReadOnlyList<CardType^>^, String^, IEnumerable<CardType^>^>^ typeFilter = nullptr, 
	CancellationToken cancellationToken = CancellationToken()
)

type CreateDialogFormFuncAsync = 
    delegate of 
        dialogName : string * 
        ?formAlias : string * 
        ?formCreationOptions : FormCreationOptions * 
        ?modifyResponseAsync : Func<CardNewResponse, CancellationToken, ValueTask> * 
        ?modifyModelAsync : Func<ICardModel, CancellationToken, ValueTask> * 
        ?typeFilter : Func<IReadOnlyList<CardType>, string, IEnumerable<CardType>> * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _formAlias = defaultArg formAlias null
        let _formCreationOptions = defaultArg formCreationOptions FormCreationOptions.None
        let _modifyResponseAsync = defaultArg modifyResponseAsync null
        let _modifyModelAsync = defaultArg modifyModelAsync null
        let _typeFilter = defaultArg typeFilter null
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> ValueTask<ValueTuple<IFormViewModelBase, ICardModel>>