Is it possible to add a single item to a vis.js timeline?

Question

I'd like to add a single item to a vis.js timeline, but this doesn't seem to be possible. The closest I can get is setItems, which replaces everything in the timeline with the new items. Is there a way to non-destructively add a new item?

Answer 1

For me this worked:

timeline.itemsData.add(myItem);