Simple Mod Framework

I have a question, and I hope it’s not a dumb one. When the game asks for chunk naming conventions and the mod doesn’t have one as it’s file type, do we leave it as chunk0? For example, the 2016 Signature Suit mod has “classic-signature.rpkg” as the name, it isn’t any chunkXpatchY naming type. What should be put it when the Mod Framework is asking about the chunk file?