“Speed 180 until Final” question

Hey all… I’m an experienced Vatsim pilot on the network with who knows how many hours logged as a pilot… Question- I was flying the NYC event last night into JFK and as I was established on the localizer and once the APP controller cleared me for the ILS approach, he also gave me speed instructions that said “180 to final”… Normally, I’m used to speed restrictions on final that say something like “170 till 4 DME”, or “160 till Waypoint XXX”. First time on the network that I’ve heard “180 to final”.

Can anyone tell me what the “final” part means on that instruction? Does it mean to maintain that speed until I intercept the glide slope or is there a distance component like 4 DME?