try {
        return method.invoke(map, args);
      } catch (InvocationTargetException e) {
        throw e.getCause();
      } catch (IllegalAccessException e) {
        throw newLinkageError(e);
      }
    }
  }

  /** Verifies that {@code setUp} and {@code tearDown} are called in all map test cases. */
  private static Test testsForSetUpTearDown() {

        valueUpdater = lookup.findVarHandle(AbstractFutureState.class, "valueField", Object.class);
      } catch (ReflectiveOperationException e) {
        // Those fields exist.
        throw newLinkageError(e);
      }
    }

    @Override
    void putThread(Waiter waiter, Thread newValue) {
      waiterThreadUpdater.setRelease(waiter, newValue);
    }

    @Override