// user interface commands in a custom command manager
commandManager = new CommandManager();
commandManager.registerCommands(new PlayerCommands(this), this);
commandManager.registerCommands(new AdminCommands(this), this);
commandManager.registerCommands(new SpectatorCommands(this), this);
commandManager.registerCommands(new ConfigurationCommands(this), this);
commandManager.registerCommands(new ScoreboardCommands(this), this);
commandManager.registerCommands(lobbyListener, this);
commandManager.registerCommands(practice, this);