WorkflowEditorViewModelDragDelegate - делегат

Public Delegate Function DragDelegate ( 
	dragEventArgs As DragEventArgs,
	ByRef point As Point,
	Optional cancellationToken As CancellationToken = Nothing
) As ValueTask(Of Boolean)

public delegate ValueTask<bool> DragDelegate(
	DragEventArgs^ dragEventArgs, 
	Point% point, 
	CancellationToken cancellationToken = CancellationToken()
)

type DragDelegate = 
    delegate of 
        dragEventArgs : DragEventArgs * 
        point : Point byref * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> ValueTask<bool>