code: public List<NamedSubgraph<NamedEntityGraph<T>>> getAllSubclassSubgraph()
     {
        List<NamedSubgraph<NamedEntityGraph<T>>> list = new ArrayList<NamedSubgraph<NamedEntityGraph<T>>>();
        List<Node> nodeList = childNode.get("subclass-subgraph");
        for(Node node: nodeList)
        {
           NamedSubgraph<NamedEntityGraph<T>>  type = new NamedSubgraphImpl<NamedEntityGraph<T>>(this, "subclass-subgraph", childNode, node);
           list.add(type);
        }
        return list;
     }
docs: Returns all <code>subclass-subgraph</code> elements
  @return list of <code>subclass-subgraph</code>