public void testUsingExpectedAtomicHelper() throws Exception {
    if (isJava8() || isAndroid()) {
      assertThat(AbstractFutureState.atomicHelperTypeForTest()).isEqualTo("UnsafeAtomicHelper");
    } else {
      assertThat(AbstractFutureState.atomicHelperTypeForTest()).isEqualTo("VarHandleAtomicHelper");
    }
  }

  private static boolean isJava8() {
    return JAVA_SPECIFICATION_VERSION.value().equals("1.8");
  }

     * AbstractFutureDefaultAtomicHelperTest.
     */

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

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

    System.setProperty("user.name", "-this-is-definitely-not-the-username-we-are-running-as//?");
    try {
      TempFileCreator.testMakingUserPermissionsFromScratch();
      assertThat(isJava8()).isFalse();
    } catch (IOException expectedIfJava8) {
      assertThat(isJava8()).isTrue();
    } finally {
      System.setProperty("user.name", save);
    }
  }

  private static boolean isAndroid() {

    } else {
      assertThat(AbstractFutureState.atomicHelperTypeForTest())
          .isEqualTo("AtomicReferenceFieldUpdaterAtomicHelper");
    }
  }

  private static boolean isJava8() {
    return JAVA_SPECIFICATION_VERSION.value().equals("1.8");
  }

  private static boolean isAndroid() {
    return System.getProperty("java.runtime.name", "").contains("Android");
  }

    assertThat(defaultComparator).isNotNull();
    assertThat(UnsignedBytes.lexicographicalComparator()).isSameInstanceAs(defaultComparator);
    if (!isJava8()) {
      assertThat(defaultComparator).isInstanceOf(ArraysCompareUnsignedComparator.class);
    } else if (unsafeComparatorAvailable()) {
      assertThat(defaultComparator).isInstanceOf(UnsafeComparator.class);

    @Override
    protected void doStop() {
      notifyFailed(new IllegalStateException("stop failure"));
    }
  }

  public void testServiceStartupTimes() {
    if (isWindows() && isJava8()) {
      // Flaky there: https://github.com/google/guava/pull/6731#issuecomment-1736298607
      return;
    }
    Service a = new NoOpDelayedService(150);
    Service b = new NoOpDelayedService(353);

    @Override
    protected void doStop() {
      notifyFailed(new IllegalStateException("stop failure"));
    }
  }

  public void testServiceStartupTimes() {
    if (isWindows() && isJava8()) {
      // Flaky there: https://github.com/google/guava/pull/6731#issuecomment-1736298607
      return;
    }
    Service a = new NoOpDelayedService(150);
    Service b = new NoOpDelayedService(353);

          if (c == null) {
            return super.findClass(name);
          }
          return c;
        }
        return super.loadClass(name);
      }
    };
  }

  private static boolean isJava8() {
    return JAVA_SPECIFICATION_VERSION.value().equals("1.8");
  }