public UnmodifiableIterator<C> descendingIterator() {
    return emptyIterator();
  }

  @Override
  boolean isPartialView() {
    return false;
  }

  @Override
  public boolean isEmpty() {
    return true;
  }

  @Override
  public ImmutableList<C> asList() {
    return ImmutableList.of();
  }

  @Override
  public String toString() {
    return "[]";
  }

        rangeMap.put(range1, 1);
        rangeMap.put(range2, 2);

        Range<Integer> expected;
        if (range1.isEmpty()) {
          if (range2.isEmpty()) {
            expected = null;
          } else {
            expected = range2;
          }
        } else {
          if (range2.isEmpty()) {
            expected = range1;
          } else {
            expected = range1.span(range2);
          }

            String msg = "Cannot register null or empty aggregation: name=" + name + " value=" + value;
            throw new InvalidQueryRegisteredException(msg);
        }
    }

    protected void checkEsInvalidAggregationCollection(String name, Collection<?> values) {
        if (values == null || values.isEmpty()) {

                sb.append(LS);
                sb.append("from the specified remote repositories:");
                sb.append(LS).append("  ");

                if (remoteRepositories.isEmpty()) {
                    sb.append("(none)");
                }

                for (Iterator<ArtifactRepository> i = remoteRepositories.iterator(); i.hasNext(); ) {

            "isolatedProjectsIntegTest"
        } else {
            "${testCoverage.testType.asCamelCase()}Test"
        }
    return when {
        subprojects.isEmpty() -> {
            testTaskName
        }

        else -> {
            subprojects.joinToString(" ") { "$it:$testTaskName" }
        }
    }

        if (entityList.isEmpty()) {
            return new int[] {};
        }
        return delegateBatchRequest(entityList, esEntity -> {
            return createInsertRequest(esEntity);
        });
    }

    protected int[] delegateBatchUpdate(List<? extends Entity> entityList, UpdateOption<? extends ConditionBean> option) {
        if (entityList.isEmpty()) {
            return new int[] {};

  public void testIsEmpty() {
    assertThat(ImmutableDoubleArray.of().isEmpty()).isTrue();
    assertThat(ImmutableDoubleArray.of(0).isEmpty()).isFalse();
    assertThat(ImmutableDoubleArray.of(0, 1, 3).isEmpty()).isFalse();
    assertThat(ImmutableDoubleArray.of(0, 1, 3).subArray(1, 1).isEmpty()).isTrue();
    assertThat(ImmutableDoubleArray.of(0, 1, 3).subArray(1, 2).isEmpty()).isFalse();
  }

  public void testGet_good() {

  /** Returns {@code true} if this range set contains no ranges. */
  boolean isEmpty();

  /**
   * Returns the minimal range which {@linkplain Range#encloses(Range) encloses} all ranges in this
   * range set.
   *
   * @throws NoSuchElementException if this range set is {@linkplain #isEmpty() empty}
   */
  Range<C> span();

  // Views

  /**

        }
        if (username.length() > MAX_USERNAME_LENGTH) {
            throw new IllegalArgumentException("Username exceeds maximum length: " + username.length());
        }
        if (!username.isEmpty() && !VALID_USERNAME.matcher(username).matches()) {
            throw new IllegalArgumentException("Username contains invalid characters: " + username);
        }
    }

    /**
     * Validates domain name

  public void testNewArray_fromClass_empty() {
    String[] empty = ObjectArrays.newArray(String.class, 0);
    assertEquals(String[].class, empty.getClass());
    assertThat(empty).isEmpty();
  }

  @GwtIncompatible // ObjectArrays.newArray(Class, int)
  public void testNewArray_fromClass_nonempty() {
    String[] array = ObjectArrays.newArray(String.class, 2);