// Each of the values added to the map should either still be there, or have seen a removal
    // notification.
    assertEquals(expectedKeys, Sets.union(cache.asMap().keySet(), removalNotifications.keySet()));
    assertTrue(Sets.intersection(cache.asMap().keySet(), removalNotifications.keySet()).isEmpty());
    threadPool.shutdown();
    threadPool.awaitTermination(300, SECONDS);
  }

  /**

 * order to {@code [key2, key1]}. The {@link #entries()} iterator returns mutable map entries, and
 * {@link #replaceValues} attempts to preserve iteration order as much as possible.
 *
 * <p>The collections returned by {@link #keySet()} and {@link #asMap} iterate through the keys in
 * the order they were first added to the multimap. Similarly, {@link #get}, {@link #removeAll}, and

        metadata.put(key, new String[] { value });
    }

    public String[] getValues(final String key) {
        return metadata.get(key);
    }

    public Set<String> getKeySet() {
        return metadata.keySet();
    }

    public String getContent() {
        return content;
    }

    public void setContent(final String content) {
        this.content = content;
    }

    @Override

    for (Object entry : map.entrySet()) {
      retVal += entry.hashCode();
    }
    return (int) retVal;
  }

  @Benchmark
  public int keyIterate() {
    long retVal = 0;
    for (Object key : map.keySet()) {
      retVal += key.hashCode();
    }
    return (int) retVal;
  }

      this.upperBound = upperBound;
      checkArgument(
          lowerBound == null || upperBound == null || compare(lowerBound, upperBound) <= 0);
    }

    @Override
    public SortedSet<C> keySet() {
      return new Maps.SortedKeySet<>(this);
    }

    @Override
    public Comparator<? super C> comparator() {
      return columnComparator();
    }

    int compare(Object a, Object b) {

    underlying.put("g", 7);
    Map<String, String> map = transformValues(underlying, Functions.toStringFunction());

    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();

          .put("SHA-512", Hashing.sha512())
          .build();

  public void testHashing() {
    for (String stringToTest : INPUTS) {
      for (String algorithmToTest : ALGORITHMS.keySet()) {
        assertMessageDigestHashing(HashTestUtils.ascii(stringToTest), algorithmToTest);
      }
    }
  }

  public void testPutAfterHash() {
    Hasher sha1 = Hashing.sha1().newHasher();

 * import static org.codelibs.core.collection.MultiIterator.*;
 *
 * List<String> list = ...;
 * Set<String> set = ...;
 * Map<String, Object> map = ...;
 * for (String element : iterable(list, set, map.keySet())) {
 *     ...
 * }
 * </pre>
 *
 * @author koichik
 * @param <E>
 *            要素の型
 */
public class MultiIterator<E> implements Iterator<E> {

    /** {@link Iterator}の配列 */

        // Remove "removed" properties from the cfg file
        for (String key : new ArrayList<String>(this.keySet())) {
            if (!properties.containsKey(key)) {
                this.remove(key);
                modified = true;
            }
        }
        // Update existing keys
        for (String key : properties.keySet()) {
            String v = this.get(key);
            List<String> comments = properties.getComments(key);

            if (provided instanceof WeakMojoExecutionListener) {
                listeners.put((WeakMojoExecutionListener) provided, null);
            }
        }
        return listeners.keySet();
    }