FileCancellationSource - конструктор

public FileCancellationSource(
	Func<CancellationTokenSource> tokenSourceFunc = null
)

Public Sub New ( 
	Optional tokenSourceFunc As Func(Of CancellationTokenSource) = Nothing
)

public:
FileCancellationSource(
	Func<CancellationTokenSource^>^ tokenSourceFunc = nullptr
)

new : 
        ?tokenSourceFunc : Func<CancellationTokenSource> 
(* Defaults:
        let _tokenSourceFunc = defaultArg tokenSourceFunc null
*)
-> FileCancellationSource