code: public String getBindingListenerName() {
          ServiceReference<?> ref = bindingListener.getServiceReference();
          Object serviceDescription = ref.getProperty(Constants.SERVICE_DESCRIPTION);
          if (serviceDescription instanceof String) {
              return (String) serviceDescription;
          }
  
          return bindingListener.getService().getClass().getName() + " (" + ref.getBundle().getSymbolicName() + ')';
      }
docs: Returns the binding listener name. This method can only be called
  if {@link #bindingListener} is non-null.