code: public List<DataSourceType<WebFragmentDescriptor>> getAllDataSource()
     {
        List<DataSourceType<WebFragmentDescriptor>> list = new ArrayList<DataSourceType<WebFragmentDescriptor>>();
        List<Node> nodeList = model.get("data-source");
        for(Node node: nodeList)
        {
           DataSourceType<WebFragmentDescriptor>  type = new DataSourceTypeImpl<WebFragmentDescriptor>(this, "data-source", model, node);
           list.add(type);
        }
        return list;
     }
docs: Returns all <code>data-source</code> elements
  @return list of <code>data-source</code>