public void test_allowEmptyGroupAndRole() {
        final AtomicBoolean allowEmptyPermission = new AtomicBoolean();
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            public boolean isLdapAllowEmptyPermission() {
                return allowEmptyPermission.get();
            }

            public String getRoleSearchUserPrefix() {
                return "1";
            }
        });

     * The value is, e.g. true <br>
     * comment: Whether to allow empty permissions in LDAP.
     * @return The determination, true or false. (if not found, exception but basically no way)
     */
    boolean isLdapAllowEmptyPermission();

    /**
     * Get the value for the key 'ldap.samaccountname.group'. <br>
     * The value is, e.g. false <br>
     * comment: Whether to use samAccountName for LDAP group.