@Override
    public String chooseClientAlias(String[] keyType, Principal[] issuers, Socket socket) {
        return delegate.chooseClientAlias(keyType, issuers, socket);
    }
{@link X509ExtendedKeyManager} chooses the given alias for the server side.
spring/boot3-autoconfigure/src/main/java/com/linecorp/armeria/internal/spring/CustomAliasX509ExtendedKeyManager.java