Nit: it'd be worth noting that the purpose of this function is simply to trigger evaluation of this actor script. Earlier in the diff, I noticed the comment "Actors are initialized lazily, so tell them to attach", but by the time I got here, I had forgotten that and was confused by the "attach" request type, which doesn't seem to do anything, so I had to go back and read through the patch until I reread that comment and realized what was going on here. Future developers (including future versions of us, if we haven't looked at the code in a while!) may be similarly confused.