* AbstractFutureDefaultAtomicHelperTest.
     */

    // First, ensure that our classloaders are initializing the correct helper versions:

    if (isJava8()) {
      checkHelperVersion(getClass().getClassLoader(), "UnsafeAtomicHelper");
    } else {
      checkHelperVersion(getClass().getClassLoader(), "VarHandleAtomicHelper");
    }