How to get the energy logs in Xcode 10?

In Xcode organizer, we have an option Energy, When I select my App it shows No Energy logs.


What is the best way to get these logs?

See WWDC 2018 session 228.
https://developer.apple.com/videos/play/wwdc2018/228/

When CPU is above 80% for 3 mins when in foreground. 1 min when in background.
How to get the energy logs in Xcode 10?
 
 
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