stream(getRoles()).of(stream -> stream.forEach(s -> list.add(fessConfig.getRoleSearchRolePrefix() + decode(s))));
        stream(getGroups()).of(stream -> stream.forEach(s -> list.add(fessConfig.getRoleSearchGroupPrefix() + decode(s))));
        return list.toArray(new String[list.size()]);
    }

    @Override
    public boolean isEditable() {
        return true;
    }

    @Override
    public String[] getGroupNames() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        return stream(getPermissions()).get(stream -> stream.filter(s -> s.startsWith(fessConfig.getRoleSearchGroupPrefix()))
                .map(s -> s.substring(1))
                .toArray(n -> new String[n]));
    }

    /**
     * Returns the environment for LDAP connection.
     *