code: public void parseMetaElements(Element ele, BeanMetadataAttributeAccessor attributeAccessor) {
      NodeList nl = ele.getChildNodes();
      for (int i = 0; i < nl.getLength(); i++) {
        Node node = nl.item(i);
        if (node instanceof Element && nodeNameEquals(node, META_ELEMENT)) {
          Element metaElement = (Element) node;
          String key = metaElement.getAttribute(KEY_ATTRIBUTE);
          String value = metaElement.getAttribute(VALUE_ATTRIBUTE);
          BeanMetadataAttribute attribute = new BeanMetadataAttribute(key, value);
          attribute.setSource(extractSource(metaElement));
          attributeAccessor.addMetadataAttribute(attribute);
        }
      }
    }
docs: <p>
  parseMetaElements.
  </p>
  
  @param ele a {@link org.w3c.dom.Element} object.
  @param attributeAccessor a {@link org.springframework.beans.BeanMetadataAttributeAccessor}
  object.