* AbstractFutureDefaultAtomicHelperTest.
     */

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

    checkHelperVersion(getClass().getClassLoader(), "AtomicReferenceFieldUpdaterAtomicHelper");
    /*
     * Since we use AtomicReferenceFieldUpdaterAtomicHelper by default, we'll "obviously" use it

    if (isJava8()) {
      checkHelperVersion(getClass().getClassLoader(), "UnsafeAtomicHelper");
    } else {
      checkHelperVersion(getClass().getClassLoader(), "VarHandleAtomicHelper");
    }
    checkHelperVersion(NO_VAR_HANDLE, "UnsafeAtomicHelper");
    checkHelperVersion(NO_UNSAFE, "AtomicReferenceFieldUpdaterAtomicHelper");
    checkHelperVersion(NO_ATOMIC_REFERENCE_FIELD_UPDATER, "SynchronizedHelper");

     * AggregateFutureStateDefaultAtomicHelperTest.
     */

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

    checkHelperVersion(getClass().getClassLoader(), "SafeAtomicHelper");
    checkHelperVersion(NO_ATOMIC_FIELD_UPDATER, "SynchronizedAtomicHelper");

    // Then, run the actual tests under each alternative classloader:

    runTestMethod(NO_ATOMIC_FIELD_UPDATER);