docs: @Override
      @SuppressWarnings("hiding")
      @Trivial
      <T> CompletableFuture<T> newInstance(CompletableFuture<T> completableFuture, Executor managedExecutor, FutureRefExecutor futureRef) {
          return new ManagedCompletionStage<T>(completableFuture, managedExecutor, futureRef);
      }