return;
      }
      Object valueToSet = getFutureValue(future);
      if (casValue(owner, this, valueToSet)) {
        complete(
            owner,
            /*
             * Interruption doesn't propagate through a DelegatingToFuture chain (see
             * getFutureValue), so don't invoke interruptTask.
             */
            false);
      }
    }
  }