             break
         case "testChunker"? :
             // Chunk trials
-            Bartleby.sharedInstance.configureWith(BartlebyDefaultConfiguration.self)
             let chunker=Chunker(fileManager: FileManager.default,cryptoKey:Bartleby.configuration.KEY,cryptoSalt:Bartleby.configuration.SHARED_SALT)
-
             let startTime=CFAbsoluteTimeGetCurrent()
             if let userDir=Bartleby.getSearchPath(FileManager.SearchPathDirectory.desktopDirectory){
                 chunker.breakIntoChunk(fileAt:"\(userDir)/FileChunker/large.mp4", relativePath:"/large.mp4", chunksFolderPath: "\(userDir)/Tests-One-Large-File/.blocks", compress: true, encrypt: true

                "testChunker",
                "testChunkerDigest",
                "testChunkerFolder",
                ]
            let bestCandidate=self.bestCandidate(string: firstArgumentAfterExecutablePath!, reference: reference)
            print("Hey ...\"bartleby \(firstArgumentAfterExecutablePath!)\" is unexpected!")
            print("Did you mean:\"bartleby \(bestCandidate)\"?")

        case "testChunkerDigest"?:
            let startTime=CFAbsoluteTimeGetCurrent()
            // Chunk trials
            let chunker=Chunker(fileManager: FileManager.default,cryptoKey:Bartleby.configuration.KEY,cryptoSalt:Bartleby.configuration.SHARED_SALT,mode:.digestOnly)
            // let folder=Bartleby.getSearchPath(FileManager.SearchPathDirectory.desktopDirectory)!
            // let folder="/Users/bpds/Documents/Entrepot/Autoformation/Videos"
