public void initializeChannelFilters(final String channel) {
        filterMap.computeIfAbsent(channel, c -> new ConcurrentSkipListSet<>(DynamicRouterConstants.FILTER_COMPARATOR));
        filterStatisticsMap.computeIfAbsent(channel, c -> Collections.synchronizedList(new ArrayList<>()));
    }
@Test
    void testInitializeChannelFilters() {
        filterService.initializeChannelFilters(DYNAMIC_ROUTER_CHANNEL);
        Collection<PrioritizedFilter> filters = filterService.getFiltersForChannel(DYNAMIC_ROUTER_CHANNEL);
        assertNotNull(filters);
        assertTrue(filters.isEmpty());
    }