modifyList.add(mod);
    }

    /**
     * Modifies an entry.
     *
     * @param dn The DN of the entry.
     * @param modifyList The list of modification items.
     * @param envSupplier The environment supplier.
     */
    protected void modify(final String dn, final List<ModificationItem> modifyList, final Supplier<Hashtable<String, String>> envSupplier) {
        if (modifyList.isEmpty()) {

        }
    }

    public void test_throwAndCatchAsFessSystemException() {
        // Test catching as parent exception type
        String errorMessage = "LDAP bind DN is invalid";

        try {
            throw new LdapConfigurationException(errorMessage);
        } catch (FessSystemException e) {
            assertEquals(errorMessage, e.getMessage());