assertNull(table.at(1, 2));
    try {
      table.at(1, 3);
      fail();
    } catch (IndexOutOfBoundsException expected) {
    }
    try {
      table.at(1, -1);
      fail();
    } catch (IndexOutOfBoundsException expected) {
    }
    try {
      table.at(3, 2);
      fail();
    } catch (IndexOutOfBoundsException expected) {
    }
    try {
      table.at(-1, 2);
      fail();

    assertNull(table.at(1, 2));
    try {
      table.at(1, 3);
      fail();
    } catch (IndexOutOfBoundsException expected) {
    }
    try {
      table.at(1, -1);
      fail();
    } catch (IndexOutOfBoundsException expected) {
    }
    try {
      table.at(3, 2);
      fail();
    } catch (IndexOutOfBoundsException expected) {
    }
    try {
      table.at(-1, 2);
      fail();

        final ZipEntry entry = new ZipEntry(id + "/es_" + v1 + "_" + v2 + ".json");
        try {
            zos.putNextEntry(entry);
            try (CurlResponse response = ComponentUtil.getCurlHelper().get("/_" + v1 + "/" + v2).execute()) {
                CopyUtil.copy(response.getContentAsStream(), zos);
            }

  }

  @Override
  public void testEntrySetRemoveAllNullFromEmpty() {
    try {
      super.testEntrySetRemoveAllNullFromEmpty();
    } catch (RuntimeException tolerated) {
      // GWT's TreeMap.entrySet().removeAll(null) doesn't throws NPE.
    }
  }

  @Override
  public void testEntrySetRetainAllNullFromEmpty() {
    try {
      super.testEntrySetRetainAllNullFromEmpty();
    } catch (RuntimeException tolerated) {

  }

  @Override
  public void testEntrySetRemoveAllNullFromEmpty() {
    try {
      super.testEntrySetRemoveAllNullFromEmpty();
    } catch (RuntimeException tolerated) {
      // GWT's TreeMap.entrySet().removeAll(null) doesn't throws NPE.
    }
  }

  @Override
  public void testEntrySetRetainAllNullFromEmpty() {
    try {
      super.testEntrySetRetainAllNullFromEmpty();
    } catch (RuntimeException tolerated) {

        String imagePath = "thumbnail/600x400.png";
        try (ImageInputStream input = ImageIO.createImageInputStream(classLoader.getResourceAsStream(imagePath))) {
            generator.saveImage(input, outputFile);
        }
        assertImageSize(outputFile, 100, 66);

        imagePath = "thumbnail/600x400.gif";

    }

    @Override
    public synchronized void insert(final StemmerOverrideItem item) {
        try (StemmerOverrideUpdater updater = new StemmerOverrideUpdater(item)) {
            reload(updater);
        }
    }

    @Override
    public synchronized void update(final StemmerOverrideItem item) {
        try (StemmerOverrideUpdater updater = new StemmerOverrideUpdater(item)) {
            reload(updater);
        }

            throws PluginManagerException, ComponentLookupException {
        MavenSession session = legacySupport.getSession();

        PluginDescriptor pluginDescriptor;
        try {
            pluginDescriptor = pluginManager.getPluginDescriptor(
                    plugin, session.getCurrentProject().getRemotePluginRepositories(), session.getRepositorySession());

    assertFalse(range.hasLowerBound());
    try {
      range.lowerEndpoint();
      fail();
    } catch (IllegalStateException expected) {
    }
    try {
      range.lowerBoundType();
      fail();
    } catch (IllegalStateException expected) {
    }
  }

  private static void assertUnboundedAbove(Range<Integer> range) {
    assertFalse(range.hasUpperBound());
    try {
      range.upperEndpoint();

    assertEquals(1, (int) iter.next());

    try {
      iter.peek();
      fail("peek() should throw NoSuchElementException at end");
    } catch (NoSuchElementException expected) {
    }

    try {
      iter.peek();
      fail("peek() should continue to throw NoSuchElementException at end");
    } catch (NoSuchElementException expected) {
    }

    try {
      iter.next();