code: private Object getReturnValueFromElement(SerializerHandler serializerHandler, Element element) throws XMLRPCException {
  
  		Element childElement = XMLUtil.getOnlyChildElement(element.getChildNodes());
  
  		return serializerHandler.deserialize(childElement);
  	}
docs: This method takes an element (must be a param or fault element) and
  returns the deserialized object of this param tag.
  
  @param element An param element.
  @return The deserialized object within the given param element.
  @throws XMLRPCException Will be thrown when the structure of the document
  doesn't match the XML-RPC specification.