// under a configured base DN in the LDAP directory.
	validDN, isUnderBaseDN, err := l.GetValidatedUserDN(conn, username)
	if err == nil && !isUnderBaseDN {
		// Not under any configured base DN, so treat as not found.
		return nil, nil
	}
	return validDN, err
}

// GetValidatedUserDN validates the given user DN. Will error out if conn is nil. The returned

		}

		hasDiff := false

		// For the parent value, we require that the parent exists in the LDAP
		// server and is under a configured base DN.
		validatedParent, isUnderBaseDN, err := sys.LDAPConfig.GetValidatedUserDN(conn, parent)
		if err != nil {
			collectedErrors = append(collectedErrors, fmt.Errorf("could not validate parent exists in LDAP directory: %w", err))
			continue
		}