import scala.compat.java8.FutureConverters
  import java.util.concurrent.{CompletableFuture, Future => JFuture}
  import java.util.function.Supplier

 def lift[F[_]: LiftIO: Sync, A](jf: JFuture[A]): F[A] =
      Sync[F].delay(LiftIO[F].liftIO(IO.fromFuture(IO{
          FutureConverters.toScala[A](CompletableFuture.supplyAsync(() => jf.get))
        })))
        .flatten