ClassLoader oldClassLoader = Thread.currentThread().getContextClassLoader();
    Thread.currentThread().setContextClassLoader(NO_UNSAFE);
    try {
      runTestMethod(NO_UNSAFE);
    } finally {
      Thread.currentThread().setContextClassLoader(oldClassLoader);
    }

    Thread.currentThread().setContextClassLoader(NO_ATOMIC_REFERENCE_FIELD_UPDATER);
    try {
      runTestMethod(NO_ATOMIC_REFERENCE_FIELD_UPDATER);

    ClassLoader oldClassLoader = Thread.currentThread().getContextClassLoader();
    Thread.currentThread().setContextClassLoader(NO_UNSAFE);
    try {
      runTestMethod(NO_UNSAFE);
    } finally {
      Thread.currentThread().setContextClassLoader(oldClassLoader);
    }

    Thread.currentThread().setContextClassLoader(NO_ATOMIC_REFERENCE_FIELD_UPDATER);
    try {
      runTestMethod(NO_ATOMIC_REFERENCE_FIELD_UPDATER);

        ClassLoader oldClassLoader = Thread.currentThread().getContextClassLoader();
        try {
            Thread.currentThread().setContextClassLoader(pluginDescriptor.getClassRealm());

            return container.lookup(role, roleHint);
        } finally {
            Thread.currentThread().setContextClassLoader(oldClassLoader);
        }
    }

    public Map<String, Object> getPluginComponents(Plugin plugin, String role)

    try {
      Thread.currentThread().setContextClassLoader(loader);
      URL url = Resources.getResource(tempFile.getName());
      String text = Resources.toString(url, Charsets.UTF_8);
      assertEquals("rud a chur ar an méar fhada" + System.lineSeparator(), text);
    } finally {
      Thread.currentThread().setContextClassLoader(oldContextLoader);
    }
  }

              }
            }
            return super.loadClass(name);
          }
        };
    oldClassLoader = Thread.currentThread().getContextClassLoader();
    Thread.currentThread().setContextClassLoader(classReloader);

    oldSecurityManager = System.getSecurityManager();
    /*
     * TODO(cpovirk): Why couldn't I get this to work with PermissionCollection and implies(), as
     * used by ClassPathTest?
     */

    try {
      Thread.currentThread().setContextClassLoader(loader);
      URL url = Resources.getResource(tempFile.getName());
      String text = Resources.toString(url, Charsets.UTF_8);
      assertEquals("rud a chur ar an méar fhada" + System.lineSeparator(), text);
    } finally {
      Thread.currentThread().setContextClassLoader(oldContextLoader);
    }
  }

            currentThread.setContextClassLoader(CommonPoolUtil.class.getClassLoader());
            try {
                task.run();
            } catch (final Exception e) {
                logger.error("Uncaught exception from " + task, e);
            } finally {
                currentThread.setContextClassLoader(orignal);
            }
        });
    }

            final ClassLoader cl = new URLClassLoader(new URL[0], getClass().getClassLoader());
            Thread.currentThread().setContextClassLoader(cl);
            assertThat(ClassLoaderUtil.getClassLoader(TestCase.class), is(sameInstance(cl)));
        } finally {
            Thread.currentThread().setContextClassLoader(context);
        }
    }

    /**
     * @throws Exception
     */
    @Test

    Thread.currentThread().setContextClassLoader(classReloader);
    abstractFutureClass = classReloader.loadClass(AbstractFuture.class.getName());
    settableFutureClass = classReloader.loadClass(SettableFuture.class.getName());
  }

  @Override
  protected void tearDown() throws Exception {
    classReloader.close();
    Thread.currentThread().setContextClassLoader(oldClassLoader);

    ClassLoader oldClassLoader = Thread.currentThread().getContextClassLoader();
    Thread.currentThread().setContextClassLoader(NO_ATOMIC_FIELD_UPDATER);
    try {
      runTestMethod(NO_ATOMIC_FIELD_UPDATER);
      // TODO(lukes): assert that the logs are full of errors
    } finally {
      Thread.currentThread().setContextClassLoader(oldClassLoader);
    }
  }

  private void runTestMethod(ClassLoader classLoader) throws Exception {