public static String removeIdentifierFromMetadataURL(String metadataURL) {
        MetadataStoreProvider provider = findProvider(metadataURL);
        if (metadataURL.startsWith(provider.urlScheme() + ":")) {
            return metadataURL.substring(provider.urlScheme().length() + 1);
        }
        return metadataURL;
    }
@Test
    public void testRemoveIdentifierFromMetadataURL() {
        assertEquals(MetadataStoreFactoryImpl.removeIdentifierFromMetadataURL("zk:host:port"), "host:port");
        assertEquals(MetadataStoreFactoryImpl.removeIdentifierFromMetadataURL("rocksdb:/data/dir"), "/data/dir");
        assertEquals(MetadataStoreFactoryImpl.removeIdentifierFromMetadataURL("etcd:host:port"), "host:port");
        assertEquals(MetadataStoreFactoryImpl.removeIdentifierFromMetadataURL("memory:name"), "name");
        assertEquals(MetadataStoreFactoryImpl.removeIdentifierFromMetadataURL("http://unknown/url/scheme"), "http://unknown/url/scheme");
        assertEquals(MetadataStoreFactoryImpl.removeIdentifierFromMetadataURL("custom:suffix"), "suffix");
    }