public String getAbsolutePath() {
        String path = getPath();
        if (path != null && !path.startsWith("/")) {
            return "/" + path;
        }
        return path;
    }
@Test
    void test_getAbsolutePath() throws Exception {
        URL url = new ServiceConfigURL("p1", "1.2.2.2", 33);
        assertURLStrDecoder(url);
        assertNull(url.getAbsolutePath());

        url = new ServiceConfigURL("file", null, 90, "/home/user1/route.js");
        assertURLStrDecoder(url);
        assertEquals("/home/user1/route.js", url.getAbsolutePath());
    }