@CanIgnoreReturnValue
  public static Set<Feature<?>> addImpliedFeatures(Set<Feature<?>> features) {
    Queue<Feature<?>> queue = new ArrayDeque<>(features);
    while (!queue.isEmpty()) {
      Feature<?> feature = queue.remove();
      for (Feature<?> implied : feature.getImpliedFeatures()) {
        if (features.add(implied)) {
          queue.add(implied);
        }
      }
    }
    return features;
  }

  /**

    EnumBiMap<Currency, Country> bimap = EnumBiMap.create(map);

    Iterator<Currency> iter = bimap.keySet().iterator();
    assertEquals(Currency.DOLLAR, iter.next());
    iter.remove();

    // forward map ordered by currency
    assertThat(bimap.keySet()).containsExactly(Currency.FRANC, Currency.PESO).inOrder();
    // forward map ordered by currency (even for country values)

            int flags = FileNotifyInformation.FILE_NOTIFY_CHANGE_FILE_NAME | FileNotifyInformation.FILE_NOTIFY_CHANGE_SIZE
                    | FileNotifyInformation.FILE_NOTIFY_CHANGE_LAST_WRITE;

            // Remove FILE_NOTIFY_CHANGE_SIZE flag
            flags &= ~FileNotifyInformation.FILE_NOTIFY_CHANGE_SIZE;

            // Verify FILE_NOTIFY_CHANGE_SIZE is removed

            }
            haveBeenCalled = true;
            return 0;
          }
        };

    assertEquals(0, (int) iter.next());

    assertThrows(UnsupportedOperationException.class, iter::remove);
  }

  public void testReentrantHasNext() {
    Iterator<Integer> iter =
        new AbstractIterator<Integer>() {
          @Override
          protected Integer computeNext() {

  //   unparked.

  @SuppressWarnings({
    "LabelledBreakTarget", // TODO(b/345814817): Maybe fix?
    "nullness", // TODO(b/147136275): Remove once our checker understands & and |.
  })
  @ParametricNullness
  final V blockingGet(long timeout, TimeUnit unit)
      throws InterruptedException, TimeoutException, ExecutionException {

attr("maxlength")),!c&&e.attr("list")){var l=[],m=a("#"+e.attr("list"));if(m.find("option").each(function(){l.push(a(this).text())}),0===l.length){var n=a.trim(a("#"+e.attr("list")).text()).split("\n");a.each(n,function(b,c){l.push(a.trim(c))})}m.remove(),a.formUtils.suggest(e,l)}if(b.length){f||(h["data-validation-optional"]="true"),g=!0;var o=(e.attr("data-validation")||"")+" "+b.join(" ");e.attr("data-validation",a.trim(o)),a.each(h,function(a,b){e.attr(a,b)})}}),g&&e.trigger("html5Validation...

    Iterator<Object> empty = new EmptyAbstractSequentialIterator<>();
    assertFalse(empty.hasNext());
    assertThrows(NoSuchElementException.class, empty::next);
    assertThrows(UnsupportedOperationException.class, empty::remove);
  }

  public void testBroken() {
    Iterator<Object> broken = new BrokenAbstractSequentialIterator();
    assertTrue(broken.hasNext());
    // We can't retrieve even the known first element:

                    for (int i = 0; i < 100; i++) {
                      set.add("extra" + i);
                    }
                    for (int i = 0; i < 100; i++) {
                      set.remove("extra" + i);
                    }
                    set.trimToSize();
                    return set;
                  }
                })
            .named("CompactHashSet#TrimToSize")

var (
	Debug      = flag.Bool("debug", false, "dump instructions as they are parsed")
	OutputFile = flag.String("o", "", "output file; default foo.o for /a/b/c/foo.s as first argument")
	TrimPath   = flag.String("trimpath", "", "remove prefix from recorded source file paths")
	Shared     = flag.Bool("shared", false, "generate code that can be linked into a shared library")

                    } else {
                        queryMap.put(fileType.toUpperCase(Locale.ROOT), value);
                    }
                }
            }
            queryMap.remove("labels.facet_filetype_others");
            queryMap.put("labels.facet_filetype_others", "filetype:others");
            if (logger.isDebugEnabled()) {
                logger.debug("updated query map: {}", queryMap);