public static String getDatabaseRuleActiveVersionNode(final String databaseName, final String ruleName, final String key) {
        return String.join("/", getDatabaseRuleNode(databaseName, ruleName), key, ACTIVE_VERSION);
    }
@Test
    void assertGetDatabaseRuleActiveVersionNode() {
        assertThat(DatabaseRuleMetaDataNode.getDatabaseRuleActiveVersionNode("foo_db", "foo_rule", "foo_tables"), is("/metadata/foo_db/rules/foo_rule/foo_tables/active_version"));
    }