io.out.println(getId());
io.out.println(" -- ");
io.out.println();
Printer printer = new Printer(clp);
printer.printUsage(io.out);
io.out.println();
}
protected <T> List<T> getAllServices(Class<T> clazz, String filter) throws Exception {
ServiceReference[] references = getBundleContext().getAllServiceReferences(clazz.getName(), filter);