docs: public final <T> ServiceRegistration<?> registerService(Class<T> iface, T instance,
  	    Dictionary<String, String> dictionary) {
  	logger.info(
  		"Register service '{}' for interface '{}' (context='" + context.getBundle().getSymbolicName() + "').",
  		instance.getClass().getName(), iface.getName());
  	ServiceRegistration<?> serviceRegistration = context.registerService(iface, instance, dictionary);
  	serviceRegistrations.add(serviceRegistration);
  	return serviceRegistration;
      }