True, you cannot add the same page to the collection multiple times using add().
If you use append() however, you can assign a new key (for example, by adding the date to the the key) and add the page to the collection with this new key.
True, you cannot add the same page to the collection multiple times using add().
If you use append() however, you can assign a new key (for example, by adding the date to the the key) and add the page to the collection with this new key.