enableLocationEvents(options and background

According to documentation

enableLocationEvents

Using this API requires enabling the Positioning Permission.

ONLY DEVICE APPS AND WIDGETS may use this API.

Note:W ill cause an app crash if called from AUDIO CONTENT PROVIDER, DATA FIELD, or WATCH FACE app.

And question,, what about a BACKGROUND? Can I use positioning in BACKGROUND  attached to watch face? Yes, i know if cost a lot of energy...