Consider the following endpoint:

	@GET
	fun listStuff(@QueryParam("id") ids: Set<UUID>): List<Stuff> {
		...
	}

When issuing curl http://localhost/liststuff?id= .. that is, id without a value. The Set<UUID> ids will be a set that contains one null item.

I've tried adding @NotEmpty Set<UUID>, and Set<@NotNull UUID> and various permutations, without getting the endpoint to reject the request.

Is this a known limitation or am I missing something?