// methods that involve volatile read/write operations, in practice there is no issue. Also, the
  // way in such a visibility issue would surface is most likely as a failure of cancel() to
  // propagate to the input. Cancellation propagation is fundamentally racy so this is fine.
  //
  // Future versions of the JMM may revise safe construction semantics in such a way that we can
  // safely publish these objects and we won't need this whole discussion.

//	error: An error if the statement preparation fails.
func (s *lruStore) New(ctx context.Context, key string, isTransaction bool, conn ConnPool, locker sync.Locker) (_ *Stmt, err error) {
	// Create a Stmt object and set its Transaction property.
	// The prepared channel is used to synchronize the statement preparation state.
	cacheStmt := &Stmt{
		Transaction: isTransaction,

   *     cancelled or set.
   * @since 19.0
   */
  @CanIgnoreReturnValue
  @SuppressWarnings("Interruption") // We are propagating an interrupt from a caller.
  protected boolean setFuture(ListenableFuture<? extends V> future) {
    checkNotNull(future);
    @RetainedLocalRef Object localValue = value();
    if (localValue == null) {

        }
        throw new AssertionError(status);
      }
      future.addListener(() -> provideValueAndCloser(consumer, this), executor);
    }

    @SuppressWarnings("Interruption") // We are propagating an interrupt from a caller.
    boolean cancel(boolean mayInterruptIfRunning) {
      logger.get().log(FINER, "cancelling {0}", closingFutureToString());
      boolean cancelled = future.cancel(mayInterruptIfRunning);