Android Question Hang up WhatsApp calls!

[BenKhederSoftware]

Hello
How can I end all current WhatsApp calls?
I would like that if you click on a button, all calls should end immediately.
So hang up!
Thank you for your help

edit1:
I now have another plan.
In case you can't end the call via API.
Then my new solution would be.
When button click, Whatsapp APP will display again.
Would that be possible?

 

[DonManfred]

Click on EndCall in Whatsapp. There is no public Api for such thing.

 

[BenKhederSoftware]

Unfortunately, I haven't found any code to hang up until now.
Thanks for the reply from DonManfred.
You're right, it seems like there is no solution.
If someone knows a solution, it would be good.
If not, I just have to omit the function in my APP.
Thanks