@Test
    public void getCopyInstances() {
        List<ShenyuServiceInstance> list = shenyuServiceInstanceLists.getCopyInstances();
        Assertions.assertEquals(1, list.size());
    }
The Test Case For {@link ShenyuServiceInstanceLists}.
shenyu-plugin/shenyu-plugin-proxy/shenyu-plugin-rpc/shenyu-plugin-grpc/src/test/java/org/apache/shenyu/plugin/grpc/resolver/ShenyuServiceInstanceListsTest.java