code: public List<Permission<PermissionsDescriptor>> getAllPermission()
     {
        List<Permission<PermissionsDescriptor>> list = new ArrayList<Permission<PermissionsDescriptor>>();
        List<Node> nodeList = model.get("permission");
        for(Node node: nodeList)
        {
           Permission<PermissionsDescriptor>  type = new PermissionImpl<PermissionsDescriptor>(this, "permission", model, node);
           list.add(type);
        }
        return list;
     }
docs: Returns all <code>permission</code> elements
  @return list of <code>permission</code>