code: public List<IfSystemProperty<Exclude<T>>> getAllIfSystemProperty()
     {
        List<IfSystemProperty<Exclude<T>>> list = new ArrayList<IfSystemProperty<Exclude<T>>>();
        List<Node> nodeList = childNode.get("if-system-property");
        for(Node node: nodeList)
        {
           IfSystemProperty<Exclude<T>>  type = new IfSystemPropertyImpl<Exclude<T>>(this, "if-system-property", childNode, node);
           list.add(type);
        }
        return list;
     }
docs: Returns all <code>if-system-property</code> elements
  @return list of <code>if-system-property</code>