try (DirContextHolder holder = getDirContext(() -> env)) {
            final DirContext context = holder.get();
            final LdapUser ldapUser = createLdapUser(username, env);
            if (!allowEmptyGroupAndRole(ldapUser)) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Login failed. No permissions. {}", context);
                }
                return OptionalEntity.empty();