What triggers roon to add an artist image when it encounters a new artist?

On 2/10 I added a debut album by a “Taylor Rae” to my local library. Prior to doing that I added said artist and album to Musicbrainz.

Roon has subsequently assumed this Taylor Rae is Taylor Rae Vencill and assigned all composition credits accordingly.

Given roon now appears to have some knowledge of this performer, at what point does it actually source an image?