import org.codelibs.fess.auth.chain.AuthenticationChain;
import org.codelibs.fess.es.user.exentity.User;

public class AuthenticationManager {

    protected AuthenticationChain[] chains = {};

    public void insert(final User user) {
        chains().of(stream -> stream.forEach(c -> c.update(user)));
    }

    public boolean changePassword(final String username, final String password) {