void testNoConstructorLookup() {
        // Act & Assert: interfaces have no constructors
        assertThrows(NoSuchMethodException.class, () -> SessionSetupHandler.class.getDeclaredConstructor());
    }

    @Test
    @DisplayName("Invalid: resolving class by null name throws NPE")
    void testClassForNameWithNull() {

                    String impl = properties.getProperty(slf4jBinding);
                    if (impl != null) {
                        return (Slf4jConfiguration)
                                Class.forName(impl).getDeclaredConstructor().newInstance();
                    }
                } catch (IOException
                        | ClassNotFoundException
                        | NoSuchMethodException

    // exercise some classes from the parallel ClassLoader.
    AtomicReference<Object> sepFrqA =
        new AtomicReference<Object>(sepFrqC.getDeclaredConstructor().newInstance());
    Class<?> sepFwrC = sepLoader.loadClass(MyFinalizableWeakReference.class.getName());
    Constructor<?> sepFwrCons = sepFwrC.getConstructor(Object.class, sepFrqC);

    Thread.currentThread().setContextClassLoader(classLoader);
    try {
      Class<?> test = classLoader.loadClass(FuturesTest.class.getName());
      Object testInstance = test.getDeclaredConstructor().newInstance();
      test.getMethod("setUp").invoke(testInstance);
      test.getMethod(getName()).invoke(testInstance);
      test.getMethod("tearDown").invoke(testInstance);
    } finally {

    Thread.currentThread().setContextClassLoader(classLoader);
    try {
      Class<?> test = classLoader.loadClass(AbstractFutureTest.class.getName());
      test.getMethod(getName()).invoke(test.getDeclaredConstructor().newInstance());
    } finally {
      Thread.currentThread().setContextClassLoader(oldClassLoader);
    }
  }

  private void checkHelperVersion(ClassLoader classLoader, String expectedHelperClassName)