cptracker = new CommandProviderTracker(context, CommandProvider.class.getName(), this);
cptracker = new ServiceTracker(context, CommandProvider.class.getName(), null);
	private void initialize() {		getDefaultStreams();		context = osgi.getBundleContext();		// set up a service tracker to track CommandProvider registrations		cptracker = new CommandProviderTracker(context, CommandProvider.class.getName(), this);		cptracker.open();		// register the OSGi command provider		osgicp = new FrameworkCommandProvider(osgi);	}