code: protected Element getElement(String name, int index)
  	{
  		List<Element> children = getElement().getChildren(name);
  
  		if (children.size() > index)
  			return children.get(index);
  		else
  			return null;
  	}
docs: Helper method to retrieve a child element with a particular name and index
  
  @param name
  the name of the element
  @param index
  the index (where 0 is the first element with that name)
  
  @return an Element (or null if none could be found by that name or with that index)