code: public List<Step<Job<T>>> getAllStep()
     {
        List<Step<Job<T>>> list = new ArrayList<Step<Job<T>>>();
        List<Node> nodeList = childNode.get("step");
        for(Node node: nodeList)
        {
           Step<Job<T>>  type = new StepImpl<Job<T>>(this, "step", childNode, node);
           list.add(type);
        }
        return list;
     }
docs: Returns all <code>step</code> elements
  @return list of <code>step</code>