assertEquals(INITIAL_COUNT, multiset.remove(KEY, 0));
  }

  public void testRemove_zeroFromNone() {
    when(backingMap.get(KEY)).thenReturn(null);

    assertEquals(0, multiset.remove(KEY, 0));
  }

  public void testRemove_nonePresent() {
    when(backingMap.get(KEY)).thenReturn(null);

    assertEquals(0, multiset.remove(KEY, 400));
  }

  public void testRemove_someRemaining() {

    assertFalse(map.remove(key, 0L));

    long newValue = random.nextInt(MAX_ADDEND);
    for (int i = 0; i < ITERATIONS; i++) {
      map.put(key, newValue);
      assertTrue(map.containsKey(key));

      long before = map.get(key);
      assertFalse(map.remove(key, newValue + 1));
      assertFalse(map.remove(key, newValue - 1));
      assertTrue(map.remove(key, newValue));

        }

        // Remove state for old versions of Gradle that we're unlikely to ever require again
        fileSystemOperations.removeOldVersionsFromDir(workerDir.dir("caches"), expireDistributionCache)

        // Remove scripts caches
        fileSystemOperations.removeCachedScripts(workerDir.dir("caches").asFile)

        // Remove script caches from TestKit integTest temp dir

    map.remove("a");
    assertFalse(underlying.containsKey("a"));

    Set<String> keys = map.keySet();
    keys.remove("b");
    assertFalse(underlying.containsKey("b"));

    Iterator<String> keyIterator = keys.iterator();
    keyIterator.next();
    keyIterator.remove();
    assertFalse(underlying.containsKey("c"));

  public Collection<V> removeAll(@Nullable Object key) {
    return MoreObjects.firstNonNull(asMap().remove(key), unmodifiableEmptyCollection());
  }

  @SuppressWarnings("EmptyList") // ImmutableList doesn't support nullable element types
  Collection<V> unmodifiableEmptyCollection() {
    // These return false, rather than throwing a UOE, on remove calls.
    return (unfiltered instanceof SetMultimap) ? emptySet() : emptyList();
  }

Public properties are **stable properties**: they CANNOT be renamed or removed without notice.
While we normally deprecate the feature or behavior itself, changes to the property cannot happen in a minor release.
Public properties must be documented.

**Internal properties** are not part of the Public API.
Internal properties are **unstable properties**: they CAN be renamed or removed without notice.
They are not intended for general use.

   * this graph.
   *
   * <p>This is equal to the union of {@link #predecessors(Object)} and {@link #successors(Object)}.
   *
   * <p>If {@code node} is removed from the graph after this method is called, the {@code Set}
   * {@code view} returned by this method will be invalidated, and will throw {@code
   * IllegalStateException} if it is accessed in any way, with the following exceptions:

        Object key = warmed.get(i - WARMUP_MIN).getKey();
        Object value = warmed.get(i - WARMUP_MIN).getValue();
        assertThat(cache.asMap().remove(key, -1)).isFalse();
        assertThat(cache.asMap().remove(key, value)).isTrue();
        assertThat(cache.asMap().remove(key, -1)).isFalse();
        assertThat(cache.asMap().containsKey(key)).isFalse();
      }
      checkEmpty(cache);
    }
  }

 *
 * <p>For instance, if <i>steps</i> is 5, one example sequence that will be tested is:
 *
 * <ol>
 *   <li>remove();
 *   <li>hasNext()
 *   <li>hasNext();
 *   <li>remove();
 *   <li>next();
 * </ol>
 *
 * <p>This particular order of operations may be unrealistic, and testing all 3^5 of them may be
 * thought of as overkill; however, it's difficult to determine which proper subset of this massive

        // If createTransport returns null (no mock setup), remove immediately
        try {
            SmbTransport testTransport = manager.createTransport(failedChannel.getLocalInterface(), failedChannel.getRemoteInterface());
            if (testTransport == null) {
                // No recovery possible, remove synchronously
                removeChannel(failedChannel);
                return;
            }