/**
   * Build the definition of the HTTPClientBuilder which contains all our configuration.
   *
   * @param element the HTTPMetadataProvider element
   * @param parserContext context
   * @return the bean definition
   */
  private BeanDefinition parseTLSTrustEngine(Element element, ParserContext parserContext) {
    Element tlsTrustEngine =
        ElementSupport.getFirstChildElement(element, TLS_TRUST_ENGINE_ELEMENT_NAME);
    if (tlsTrustEngine != null) {
      Element trustEngine =
          ElementSupport.getFirstChildElement(
              tlsTrustEngine, AbstractMetadataProviderParser.TRUST_ENGINE_ELEMENT_NAME);
      if (trustEngine != null) {
        return SpringSupport.parseCustomElement(trustEngine, parserContext);
      } else {
        // This should be schema-invalid, but log a warning just in case.
        log.warn(
            "{}:, Element {} did not contain a {} child element",
            parserContext.getReaderContext().getResource().getDescription(),
            TLS_TRUST_ENGINE_ELEMENT_NAME,
            AbstractMetadataProviderParser.TRUST_ENGINE_ELEMENT_NAME);
      }
    }

    return null;
  }
  /** {@inheritDoc} */
  @Override
  protected void doV2Parse(
      @Nonnull final Element config,
      @Nonnull final ParserContext parserContext,
      @Nonnull final BeanDefinitionBuilder builder) {
    log.debug("{} Parsing v2 configuration {}", getLogPrefix(), config);

    final String targetResolvingStrategy =
        AttributeSupport.getAttributeValue(config, new QName("targetDeterminationStrategy"));
    Constraint.isNotNull(
        StringSupport.trimOrNull(targetResolvingStrategy),
        "The targetDeterminationStrategy can not be null or empty, please adjust entityID from the AQ DataConnector");

    if (targetResolvingStrategy.equals("mysql")) {
      // Constructor is MySQLTargetResolvingStrategy(String url, String username, String password),
      // adding arguments in this order:
      final BeanDefinitionBuilder mysqlTargetResolvingStrategy =
          BeanDefinitionBuilder.genericBeanDefinition(MySQLTargetDeterminationStrategy.class);

      final String dbURL = AttributeSupport.getAttributeValue(config, new QName("dbURL"));
      Constraint.isNotNull(
          StringSupport.trimOrNull(dbURL),
          "The dbURL attribute is required if the targetResolvingStrategy is mysql, please adjust entityID from the AQ DataConnector");
      mysqlTargetResolvingStrategy.addConstructorArgValue(dbURL);

      final String dbUsername = AttributeSupport.getAttributeValue(config, new QName("dbUsername"));
      Constraint.isNotNull(
          StringSupport.trimOrNull(dbUsername),
          "The dbUsername attribute is required if the targetResolvingStrategy is mysql, please adjust entityID from the AQ DataConnector");
      mysqlTargetResolvingStrategy.addConstructorArgValue(dbUsername);

      final String dbPassword = AttributeSupport.getAttributeValue(config, new QName("dbPassword"));
      Constraint.isNotNull(
          StringSupport.trimOrNull(dbPassword),
          "The dbPassword attribute is required if the targetResolvingStrategy is mysql, please adjust entityID from the AQ DataConnector");
      mysqlTargetResolvingStrategy.addConstructorArgValue(dbPassword);

      builder.addPropertyValue(
          "targetResolvingStrategy", mysqlTargetResolvingStrategy.getBeanDefinition());
    } else if (targetResolvingStrategy.equals("ldap")) {
      final BeanDefinitionBuilder ldapTargetResolvingStrategy =
          BeanDefinitionBuilder.genericBeanDefinition(LDAPTargetDeterminationStrategy.class);

      final String sourceAttributeID =
          AttributeSupport.getAttributeValue(config, new QName("sourceAttributeID"));
      Constraint.isNotNull(
          StringSupport.trimOrNull(sourceAttributeID),
          "The sourceAttributeID attribute is required if the targetResolvingStrategy is ldap, please adjust entityID from the AQ DataConnector");
      ldapTargetResolvingStrategy.addConstructorArgValue(sourceAttributeID);

      final List<Element> dependencyElements =
          ElementSupport.getChildElements(config, ResolverPluginDependencyParser.ELEMENT_NAME);
      ldapTargetResolvingStrategy.addPropertyValue(
          "dependencies", SpringSupport.parseCustomElements(dependencyElements, parserContext));

      final String connectorID = AttributeSupport.getAttributeValue(config, new QName("id"));
      Constraint.isNotNull(
          StringSupport.trimOrNull(sourceAttributeID),
          "The connectorID can not be empty, please adjust it for the AQ DataConnector");
      ldapTargetResolvingStrategy.addConstructorArgValue(connectorID);

      builder.addPropertyValue(
          "targetResolvingStrategy", ldapTargetResolvingStrategy.getBeanDefinition());

    } else {
      log.error(
          "{} Unsupported targetResolvingStrategy: {}. Change it to mysql or ldap! ",
          getLogPrefix(),
          targetResolvingStrategy);
    }

    final BeanDefinitionBuilder attributeQueryBuilder =
        BeanDefinitionBuilder.genericBeanDefinition(AttributeQueryBuilder.class);

    // Parse value of the entityID attribute
    final String issuer = AttributeSupport.getAttributeValue(config, new QName("entityID"));
    Constraint.isNotNull(
        StringSupport.trimOrNull(issuer),
        "The entityID of the Issuer can not be empty, please adjust entityID from the AQ DataConnector");
    attributeQueryBuilder.addConstructorArgValue(issuer);

    // parsing of the defined AQAttributes for the attribute query
    final List<Element> children = ElementSupport.getChildElements(config, ATTRIBUTE_ELEMENT_NAME);
    final List<BeanDefinition> attributes = new ManagedList<>(children.size());
    for (final Element child : children) {
      final String name = AttributeSupport.getAttributeValue(child, new QName("name"));
      final String friendlyName =
          AttributeSupport.getAttributeValue(child, new QName("friendlyName"));

      final BeanDefinitionBuilder attribute =
          BeanDefinitionBuilder.genericBeanDefinition(AQAttribute.class);
      attribute.addConstructorArgValue(name);
      attribute.addConstructorArgValue(friendlyName);
      log.debug(
          "{} Added one AQAttribute to the resolving List. Friendly Name {}, Name {}",
          getLogPrefix(),
          friendlyName,
          name);
      attributes.add(attribute.getBeanDefinition());
    }

    attributeQueryBuilder.addConstructorArgValue(attributes);
    builder.addPropertyValue("attributeQueryBuilder", attributeQueryBuilder.getBeanDefinition());

    final BeanDefinitionBuilder keyManager =
        BeanDefinitionBuilder.genericBeanDefinition(AttributeQueryKeyManager.class);

    // parse the keyLocaton attribute from the AQ DataCOnnector
    final String keyLocation = AttributeSupport.getAttributeValue(config, new QName("keyLocation"));
    Constraint.isNotNull(
        StringSupport.trimOrNull(keyLocation),
        "Key location can not be empty, please adjust keyLocation from the AQ DataConnector");

    // parse the certLocaton attribute from the AQ DataCOnnector
    final String certLocation =
        AttributeSupport.getAttributeValue(config, new QName("certLocation"));
    Constraint.isNotNull(
        StringSupport.trimOrNull(certLocation),
        "Certificate location can not be empty, please adjust certLocation from the AQ DataConnector");

    keyManager.addConstructorArgValue(getPrivateKey(keyLocation));
    keyManager.addConstructorArgValue(getCertificate(certLocation));
    builder.addPropertyValue("attributeQueryKeyManager", keyManager.getBeanDefinition());

    // if the asertionSigned attribute is true, set the value to true
    final String signatureRequired =
        AttributeSupport.getAttributeValue(config, new QName("assertionSigned"));
    if (signatureRequired != null && signatureRequired.equals("true")) {
      builder.addPropertyValue("signatureRequired", Boolean.TRUE);
    }

    // if the requestedAttributesRequired attribute is true, set the value to true
    final String requireMetadataAttributes =
        AttributeSupport.getAttributeValue(config, new QName("requestedAttributesRequired"));
    if (requireMetadataAttributes != null && requireMetadataAttributes.equals("true")) {
      builder.addPropertyValue("requireMetadataAttributes", Boolean.TRUE);
    }

    builder.setInitMethodName("initialize");
    builder.setDestroyMethodName("destroy");
  }