@Override
        public void updateAllProviders(List<ProviderGroup> providerGroups) {
            ps.clear();
            for (ProviderGroup providerGroup : providerGroups) {
                ps.put(providerGroup.getName(), providerGroup.getProviderInfos());
            }
        }
@author <a href=mailto:orezsilence@163.com>zhangchengxi</a>
registry/registry-local/src/test/java/com/alipay/sofa/rpc/registry/local/DomainRegistryTest.java