Set<Command> commands = new HashSet<Command>();
commands.add(new AuthCommand());
commands.add(new GenerateKeysCommand());
commands.add(new DeleteFolderCommand());
commands.add(new EditPermissionCommand());
commands.add(new PropertiesCommand());
commands.add(new DownloadCommand());
commands.add(new UploadCommand());
commands.add(new CreateFolderCommand());
commands.add(new LogoutCommand());