public String toServiceString() {
        return buildString(true, false, true, true);
    }
@Test
    void testToServiceString() {
        URL url = URL.valueOf(
                "zookeeper://10.20.130.230:4444/org.apache.dubbo.metadata.report.MetadataReport?version=1.0.0&application=vic&group=aaa");
        assertEquals(
                "zookeeper://10.20.130.230:4444/aaa/org.apache.dubbo.metadata.report.MetadataReport:1.0.0",
                url.toServiceString());
    }