nonemptySingleton
given nonemptySingleton[T, H, Tail <: Tuple](using val ev: ExistsFor[IsSingletonSubtype, H *: Tail], val h: Aux[T, H, (List[String], T => Boolean)], val t: Aux[T, Tail, (List[String], T => Boolean)]): TapirCoproductTranslator[T, H *: Tail]
Translate non-empty tuple of only singleton subtypes into a single enum string tapir schema