what ObjectStructure in visitor design pattern is?

I have a question about visitor pattern. What is not clear to me is what is the Object structure shown in the visitor design. from the GOF design pattern book:

ObjectStructure:

• can enumerate its elements.
• ObjectStructure: may provide a high-level interface to allow the visitor to visit its elements.
• ...

Does the second ponint mean I can add the accept method to the ObjectStructure class? [like in the code below]

class ObjectStructure{
    private Collection<Element> collection;
    
    public void accept(Visitor visitor){
        for(Element element: collection)
            element.accept(visitor);
    }
}

Thank you.