Spotify API: Is there a way to determine when a so

Question

I'm trying to build an application that would utilize Spotify's API to build a playlist, I'm wondering if there is a way to determine when a song has finished playing?

I have checked their API and can't seem to find anything that I could ping or setup a callback for when it's complete.

I have looked at this question: How can I tell if a song has ended or the next button was clicked with the spotify API?

although I'm unsure of what API was being used.

Any help is appreciated, Thanks