code: public List<FunctionType<TldTaglibType<T>>> getAllFunction()
     {
        List<FunctionType<TldTaglibType<T>>> list = new ArrayList<FunctionType<TldTaglibType<T>>>();
        List<Node> nodeList = childNode.get("function");
        for(Node node: nodeList)
        {
           FunctionType<TldTaglibType<T>>  type = new FunctionTypeImpl<TldTaglibType<T>>(this, "function", childNode, node);
           list.add(type);
        }
        return list;
     }
docs: Returns all <code>function</code> elements
  @return list of <code>function</code>