if (error == null) {
          // The cast is safe because of the `run` and `error` checks.
          afterRanInterruptiblySuccess(uncheckedCastNullableTToT(result));
        } else {
          afterRanInterruptiblyFailure(error);
        }
      }
    }
  }

  @SuppressWarnings({
    "Interruption", // We are restoring an interrupt on this thread.
    "ThreadPriorityCheck", // TODO: b/175898629 - Consider onSpinWait.

          }

          @Override
          void afterRanInterruptiblySuccess(String result) {
            taskResult.set(result);
          }

          @Override
          void afterRanInterruptiblyFailure(Throwable error) {
            taskResult.setException(error);
          }
        };
    Thread runner = new Thread(task);
    runner.start();
    isInterruptibleRegistered.await();