Task RenameAsync(
	TFileId id,
	string newFilename,
	CancellationToken cancellationToken = null
)

Function RenameAsync ( 
	id As TFileId,
	newFilename As String,
	Optional cancellationToken As CancellationToken = Nothing
) As Task

abstract RenameAsync : 
        id : 'TFileId * 
        newFilename : string * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken null
*)
-> Task