ExecutionException ee = null;
      long lastTime = timed ? System.nanoTime() : 0;
      Iterator<? extends Callable<T>> it = tasks.iterator();

      futures.add(submitAndAddQueueListener(executorService, it.next(), futureQueue));
      --ntasks;
      int active = 1;

      while (true) {
        Future<T> f = futureQueue.poll();
        if (f == null) {
          if (ntasks > 0) {

        if ( a.atLeast(b) ) {
            return a;
        }
        return b;
    }


    /**
     * @param min
     *            may be null for open end
     * @param max
     *            may be null for open end
     * @return range of versions
     */
    public static Set<DialectVersion> range ( DialectVersion min, DialectVersion max ) {

  public void testCount_nullAbsent() {
    assertEquals("multiset.count(null) didn't return 0", 0, getMultiset().count(null));
  }

  @CollectionFeature.Require(absent = ALLOWS_NULL_QUERIES)
  public void testCount_null_forbidden() {
    assertThrows(NullPointerException.class, () -> getMultiset().count(null));
  }

  @CollectionSize.Require(absent = ZERO)
  @CollectionFeature.Require(ALLOWS_NULL_VALUES)

{"request":{"uri":"/2","header":{}}}`,
		},
		{
			name:  "is-not-missing-null",
			query: `select * from s3object[*] as s where s.request.header is not missing`,
			wantResult: `{"request":{"uri":"/1","header":{"User-Agent":"test"}}}
{"request":{"uri":"/2","header":null}}`,
			withJSON: `{"request":{"uri":"/1","header":{"User-Agent":"test"}}}
{"request":{"uri":"/2","header":null}}`,
		},
		{
			name:       "is-not-missing",

        return complete(v, null, COMPLETED);
      }

      /** Transition to the COMPLETED state and set the exception. */
      boolean setException(Throwable t) {
        return complete(null, t, COMPLETED);
      }

      /** Transition to the CANCELLED or INTERRUPTED state. */
      boolean cancel(boolean interrupt) {
        return complete(null, null, interrupt ? INTERRUPTED : CANCELLED);
      }

				}
				return buf.length;
			},
			write(fd, buf, offset, length, position, callback) {
				if (offset !== 0 || length !== buf.length || position !== null) {
					callback(enosys());
					return;
				}
				const n = this.writeSync(fd, buf);
				callback(null, n);
			},
			chmod(path, mode, callback) { callback(enosys()); },
			chown(path, uid, gid, callback) { callback(enosys()); },

        labelTypeBhv.delete(labelType, op -> {
            op.setRefreshPolicy(Constants.TRUE);
        });

        final LabelTypeHelper labelTypeHelper = ComponentUtil.getLabelTypeHelper();
        if (labelTypeHelper != null) {
            labelTypeHelper.refresh(getLabelTypeList());
        }
    }

    protected void setupListCondition(final LabelTypeCB cb, final LabelTypePager labelTypePager) {

     *            イテレートする要素の並び。{@literal null}であってはいけません
     * @return 配列をラップした{@link Iterable}
     */
    public static <T> Iterable<T> iterable(final T... items) {
        assertArgumentNotNull("items", items);

        return () -> new ArrayIterator<>(items);
    }

    /**
     * {@link ArrayIterator}を作成します。
     *
     * @param items
     *            イテレートする要素の並び。{@literal null}であってはいけません
     */

            throws ArtifactMetadataRetrievalException {
        Set<Artifact> dependencies = new HashSet<>();

        if ("g".equals(artifact.getArtifactId())) {
            Artifact a = null;
            try {
                a = factory.createBuildArtifact("org.apache.maven", "h", "1.0", "jar");
                dependencies.add(a);
            } catch (Exception e) {

     *
     * @param relPath is the path of the requested model source relative to this model source POM.
     * @return related model source or <code>null</code> if no such model source.
     */
    ModelSource2 getRelatedSource(String relPath);

    /**
     * Returns location of the POM, never <code>null</code>.
     */
    URI getLocationURI();