public static Task<Object> Ask(
	this ICanTell self,
	Object message,
	Nullable<TimeSpan> timeout,
	CancellationToken cancellationToken
)

[<ExtensionAttribute>]
static member Ask : 
        self : ICanTell * 
        message : Object * 
        timeout : Nullable<TimeSpan> * 
        cancellationToken : CancellationToken -> Task<Object>