There are two API urls I need to hit: one for ```thread``` and one for ```note```. I can resolve the ```thread``` URL since all I need is the app's slug.

However, I don't know the API urls for ```notes``` yet because I need to have the ```thread```'s ID to reverse the URL. I can reverse it with a placeholder ID for now. After I make the first API call, I will know the thread's IDs to substitute it in with the placeholder ```9999```.