@Test
    public void noArgsConstructor() {
        shenyuServiceInstanceLists = new ShenyuServiceInstanceLists();
        Assertions.assertNotNull(shenyuServiceInstanceLists.getShenyuServiceInstances());
    }
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