As I have just discovered for myself from #398, there is an extensions argument to get. But since we have already suffix, it makes only sense to add extension entity to be parsed out from the filename. Then get (and whatever else operating on entities) would be able to operate on the extension entity (and multiple would be allowed to be provided in a list as with any entity ATM AFAIK) and there would be no need for custom extensions argument to get. Am I correct or missing something?