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