Ticket Commerce equivalent of tribe_tpp_email_subject filter

Transitioning from Tribe Commerce to Tickets Commerce, I’m looking for the equivalent of tribe_tpp_email_subject filter so that I can continue embedding meaningful info (e.g. event name) in the subject line of confirmation emails. I guessed the equivalent filter would be named tribe_tec_email_subject, but that doesn’t seem to do it. Can anyone point me in the right direction?