map.put(three, four);
    Iterator<?> i = map.entrySet().iterator();
    i.next();
    i.remove();
    assertNotified(listener, three, four, RemovalCause.EXPLICIT);

    map.put(four, five);
    i = map.keySet().iterator();
    i.next();
    i.remove();
    assertNotified(listener, four, five, RemovalCause.EXPLICIT);

    map.put(five, six);
    i = map.values().iterator();
    i.next();
    i.remove();

            return java.util.Collections.emptyList();
        }

        @Override
        public java.util.Collection<String> getHeaderNames() {
            return headers.keySet();
        }

        @Override
        public String getCharacterEncoding() {
            return "UTF-8";
        }

        @Override
        public String getContentType() {

        assertArgumentNotEmpty("methodName", methodName);

        return methodDescsCache.containsKey(methodName);
    }

    @Override
    public String[] getMethodNames() {
        return methodDescsCache.keySet().toArray(new String[methodDescsCache.size()]);
    }

    /**
     * Returns the {@link PropertyDesc} for the specified property name.
     *
     * @param propertyName
     *            the property name

    utf8Lengths.put(0x800, 3);
    utf8Lengths.put(MIN_SUPPLEMENTARY_CODE_POINT - 1, 3);
    utf8Lengths.put(MIN_SUPPLEMENTARY_CODE_POINT, 4);
    utf8Lengths.put(MAX_CODE_POINT, 4);

    Integer[] codePoints = utf8Lengths.keySet().toArray(new Integer[] {});
    StringBuilder sb = new StringBuilder();
    Random rnd = new Random();
    for (int trial = 0; trial < 100; trial++) {
      sb.setLength(0);
      int utf8Length = 0;

    }

    @CanIgnoreReturnValue
    RoundToDoubleTester roundUnnecessaryShouldThrow() {
      unnecessaryShouldThrow = true;
      return this;
    }

    void test() {
      assertThat(expectedValues.keySet())
          .containsAtLeastElementsIn(EnumSet.complementOf(EnumSet.of(UNNECESSARY)));
      for (Map.Entry<RoundingMode, Double> entry : expectedValues.entrySet()) {
        RoundingMode mode = entry.getKey();

     */
    public static void updateObjectTags(final String objectName, final Map<String, String> tagItems) {
        final Map<String, String> tags = new HashMap<>();
        tagItems.keySet().stream().filter(s -> s.startsWith("name")).forEach(nameKey -> {
            final String valueKey = nameKey.replace("name", "value");
            final String name = tagItems.get(nameKey);

  }

  public void testKeySet() {
    ImmutableBiMap<String, Integer> bimap =
        ImmutableBiMap.copyOf(ImmutableMap.of("one", 1, "two", 2, "three", 3, "four", 4));
    Set<String> keys = bimap.keySet();
    assertEquals(newHashSet("one", "two", "three", "four"), keys);
    assertThat(keys).containsExactly("one", "two", "three", "four").inOrder();
  }

  public void testValues() {

                return responseHeaders.get(name);
            }

            @Override
            public java.util.Collection<String> getHeaderNames() {
                return responseHeaders.keySet();
            }

            @Override
            public String getCharacterEncoding() {
                return null;
            }

            @Override

  }

  @AndroidIncompatible // Android forbids null parent ClassLoader
  public void testClassPathEntries_emptyURLClassLoader_noParent() {
    assertThat(ClassPath.getClassPathEntries(new URLClassLoader(new URL[0], null)).keySet())
        .isEmpty();
  }

  @AndroidIncompatible // Android forbids null parent ClassLoader
  public void testClassPathEntries_urlClassLoader_noParent() throws Exception {
    URL url1 = new URL("file:/a");

 *       However, the precise conditions for skipping the copy operation are undefined.
 *   <li><b>Warning:</b> a view collection such as {@link ImmutableMap#keySet} or {@link
 *       ImmutableList#subList} may retain a reference to the entire data set, preventing it from
 *       being garbage collected. If some of the data is no longer reachable through other means,