@Override
    public Collection<Subscriber> getFuzzySubscribers(String namespaceId, String serviceName) {
        Collection<Subscriber> result = new HashSet<>();
        Stream<Service> serviceStream = getServiceStream();
        String serviceNamePattern = NamingUtils.getServiceName(serviceName);
        String groupNamePattern = NamingUtils.getGroupName(serviceName);
        serviceStream.filter(service -> service.getNamespace().equals(namespaceId) && service.getName()
                .contains(serviceNamePattern) && service.getGroup().contains(groupNamePattern))
                .forEach(service -> result.addAll(getSubscribers(service)));
        return result;
    }
@Test
    void testGetFuzzySubscribersByString() {
        Collection<Subscriber> actual = subscriberService.getFuzzySubscribers(service.getNamespace(), service.getGroupedServiceName());
        assertEquals(2, actual.size());
    }