write(out, data, 0, 100, true);
    final File file = out.getFile();
    assertEquals(100, file.length());
    assertTrue(file.exists());
    out.close();

    // Make sure that finalize deletes the file
    out = null;

    // times out and throws RuntimeException on failure
    GcFinalization.awaitDone(
        new GcFinalization.FinalizationPredicate() {
          @Override

    write(out, data, 0, 100, true);
    final File file = out.getFile();
    assertEquals(100, file.length());
    assertTrue(file.exists());
    out.close();

    // Make sure that finalize deletes the file
    out = null;

    // times out and throws RuntimeException on failure
    GcFinalization.awaitDone(
        new GcFinalization.FinalizationPredicate() {
          @Override

        return next;
      }

      @Override
      public String toString() {
        return "Iterators.consumingIterator(...)";
      }
    };
  }

  /**
   * Deletes and returns the next value from the iterator, or returns {@code null} if there is no
   * such value.
   */
  @CheckForNull
  static <T extends @Nullable Object> T pollNext(Iterator<T> iterator) {

        assertEquals(
            "contents of directory " + path + " not deleted with delete method " + this,
            0,
            MoreFiles.listFiles(path).size());
      }
    },
    DELETE_RECURSIVELY {
      @Override
      public void delete(Path path, RecursiveDeleteOption... options) throws IOException {
        MoreFiles.deleteRecursively(path, options);
      }

  @CanIgnoreReturnValue
  private boolean delete(File file) {
    if (file.isDirectory()) {
      File[] files = file.listFiles();
      if (files != null) {
        for (File f : files) {
          if (!delete(f)) {
            return false;
          }
        }
      }
    }

    if (!file.delete()) {
      logger.log(Level.WARNING, "couldn't delete file: {0}", new Object[] {file});
      return false;

   *
   * <p>In contrast, {@code multisetToModify.retainAll(multisetToRetain)} keeps all occurrences of
   * elements that appear at all in {@code multisetToRetain}, and deletes all occurrences of all
   * other elements.
   *
   * @return {@code true} if {@code multisetToModify} was changed as a result of this operation
   * @since 10.0
   */
  @CanIgnoreReturnValue

  private static final Object[] NO_ARGS = {};

  /**
   * {@inheritDoc}
   *
   * <ul>
   *   <li>{@code proxy.hashCode()} delegates to {@link AbstractInvocationHandler#hashCode}
   *   <li>{@code proxy.toString()} delegates to {@link AbstractInvocationHandler#toString}
   *   <li>{@code proxy.equals(argument)} returns true if:
   *       <ul>

      for (int i = 0; i < nTasks; i++) {
        futures.add(pool.submit(new MutateTask(multiset, keys)));
      }

      int[] deltas = new int[3];
      for (Future<int[]> future : futures) {
        int[] taskDeltas = future.get();
        for (int i = 0; i < deltas.length; i++) {
          deltas[i] += taskDeltas[i];
        }
      }

      List<Integer> actualCounts =
          Lists.transform(
              keys,

    }

    protected File getFile() {
      return fileThreadLocal.get();
    }

    public final void tearDown() throws IOException {
      if (!fileThreadLocal.get().delete()) {
        logger.warning("Unable to delete file: " + fileThreadLocal.get());
      }
      fileThreadLocal.remove();
    }
  }

  private static class FileByteSourceFactory extends FileFactory implements ByteSourceFactory {

  public void testPutPresentKeyDifferentValue() {
    getMap().put(k0(), v0());
    getMap().put(k0(), v1());
    // verify that the bimap is changed, and that the old inverse mapping
    // from v1 -> v0 is deleted
    expectContents(Helpers.mapEntry(k0(), v1()));
  }

  @MapFeature.Require(SUPPORTS_PUT)
  @CollectionSize.Require(ZERO)
  public void putDistinctKeysDistinctValues() {
    getMap().put(k0(), v0());