WithVec
final
class WithVec[T <: Txn[T], A, Repr <: ([~ <: Txn[~]] =>> Expr[~, IndexedSeq[A]])](vrH: Source[T, Var[T, Repr[T]]])(lift: IndexedSeq[Double] => IndexedSeq[A])(implicit context: AuralContext[T], tpe: Type[IndexedSeq[A], Repr]) extends Sink[T]