throw newLinkageError(e);
      } catch (NoSuchMethodException e) {
        // Only introduced in Java 9.
        return null;
      }
    }

    private static LinkageError newLinkageError(Throwable cause) {
      return new LinkageError(cause.toString(), cause);
    }
  }

  private static final long serialVersionUID = 0L;

            CollectionSize.ANY)
        .withSetUp(setUp)
        .withTearDown(tearDown)
        .createTestSuite();
  }

  private static LinkageError newLinkageError(Throwable cause) {
    return new LinkageError(cause.toString(), cause);
  }

    boolean casValue(AbstractFutureState<?> future, @Nullable Object expect, Object update) {
      return valueUpdater.compareAndSet(future, expect, update);
    }

    private static LinkageError newLinkageError(Throwable cause) {
      return new LinkageError(cause.toString(), cause);
    }

    @Override
    String atomicHelperTypeForTest() {
      return "VarHandleAtomicHelper";
    }
  }

  /**