                          completed:@escaping (Completion)->()){
         do {
             let box = try Bartleby.registredObjectByUID(boxUID) as Box
-            for node in box.localNodes(){
+            for node in box.localNodes{
                 if let accessors=self._accessors[node.UID]{
                     for accessor in accessors{
                         accessor.willBecomeUnusable(node: node)
                     }
                 }
-                let assembledPath=node.absolutePath()
-                try FileManager.default.removeItem(atPath: assembledPath)
+                let assembledPath=node.absolutePath
+                try self._fileManager.removeItem(atPath: assembledPath)
             }
             box.isMounted=false
             completed(Completion.successState())

        Async.utility {
            do{
                let folderPath=(destinationFilePath as NSString).deletingLastPathComponent
                try FileManager.default.createDirectory(atPath: folderPath, withIntermediateDirectories: true, attributes: nil)
                FileManager.default.createFile(atPath: destinationFilePath, contents: nil, attributes: nil)

                // Assemble
                if let writeFileHande = FileHandle(forWritingAtPath:destinationFilePath ){

            }
        }
    }
}
