Question: How to enforce unique title?

[mikeTWC1984]

I see you can add events using same title, so you can have N events with same title, and this is true for any other item (plugin, api key, etc). I see that "create" apis just do unshift. I check the docs of storage, I see "put" method will replace the item if it exists. Is it possible to throw exception on conflict, rather than replace?