* @return a new LdapUser instance
     */
    protected LdapUser createLdapUser(final String username, final Hashtable<String, String> env) {
        return new LdapUser(env, username);
    }

    /**
     * Retrieves roles for the specified LDAP user based on the provided filters.
     *
     * @param ldapUser the LDAP user to retrieve roles for