total_tracks field in album object and simplified album object isn't documented

[NetanZaf]

Hi everyone,

I've made a couple of requests to the api that resulted in various album and simplified album objects. I've noticed that all of the responses included a total_tracks property that is strangely not documented in the api reference, neither stable nor beta.

For example, when requesting Meghan Trainor's new album:

{
  ...
  "total_tracks": 20,
  ...
}

I wanted to ask if you have any idea why it's not documented, and if it's safe to use in my software.

Thanks