//Not meant to be a rant

I'm doing the doc for a uni project and IDK how to comment our interfaces (not talking about the methods - I can get my way around those) (it's a pair work and my colleague told me to do the doc because I type faster than her 😛 I don't really mind tbh). What should I write as a description of the interface, everything I think about sounds stupid LoL
For example: there's an interface for an activity (which requires 3 arguments to create an object Activity). Do I simply go like

/ * *
* Activity
*
* ( we have to put our names )
* /

Or should I write something more/else? Any tips?
This is bugging me all the way to hell and back