flyTo with destination lat/long and "lookAt" lat/long?

I can’t see a reasonable way to Camera.flyTo() a set of lat/long coords, while setting the lat/long gaze/orientation at the same time.

I understand that I can pass orientation { direction: , up: } but the docs are entirely clear on what “up” is.

Is it best to just use a Camera.lookAt() in the “complete” function callback after the flyTo is done?

The examples here seem to no longer match up with the API: