Query regarding tsfeatures library

[Faakhir30]

Hi everyone,
I'm tring to implement a wrapper around https://github.com/Nixtla/tsfeatures in sktime.
Could'nt find any public community/disscussions section on that repository, so asking my query over here.

In tsfeatures_wide follwoing columns are required ["unique_id", "seasonality", "y"].
Reference:
https://github.com/Nixtla/tsfeatures/blob/f82605b273831948f45242838b3d0618d510854e/tsfeatures/tsfeatures.py#L1001-L1030

But I'm unable to see what these 3 required columns means. I've skimed through docstring, readme, docs...

Can anyone please confirm purpose/what to expect in these 3 columns?

[Faakhir30]

For passersby, found slack community link, Answered by Marco over slack