Field tableField = HashMap.class.getDeclaredField("table");
    tableField.setAccessible(true);
    Object[] table = (Object[]) tableField.get(hashMap);
    // In JDK8, table is set lazily, so it may be null.
    return table == null ? 0 : table.length;
  }

  public void testCapacityForLargeSizes() {
    int[] largeExpectedSizes =
        new int[] {
          Integer.MAX_VALUE / 2 - 1,

    Field tableField = HashMap.class.getDeclaredField("table");
    tableField.setAccessible(true);
    Object[] table = (Object[]) tableField.get(hashMap);
    // In JDK8, table is set lazily, so it may be null.
    return table == null ? 0 : table.length;
  }

  public void testCapacityForLargeSizes() {
    int[] largeExpectedSizes =
        new int[] {
          Integer.MAX_VALUE / 2 - 1,

 * so.
 */
@GwtIncompatible
@ElementTypesAreNonnullByDefault
abstract class Striped64 extends Number {
  /*
   * This class maintains a lazily-initialized table of atomically
   * updated variables, plus an extra "base" field. The table size
   * is a power of two. Indexing uses masked per-thread hash codes.
   * Nearly all declarations in this class are package-private,

  /**
   * Returns the value of each present instance from the supplied {@code optionals}, in order,
   * skipping over occurrences of {@link Optional#absent}. Iterators are unmodifiable and are
   * evaluated lazily.
   *
   * <p><b>Comparison to {@code java.util.Optional}:</b> this method has no equivalent in Java 8's
   * {@code Optional} class; use {@code
   * optionals.stream().filter(Optional::isPresent).map(Optional::get)} instead.

   * in the returned list. The {@code add}, {@code addAll} and {@code set} methods are unsupported
   * in the returned list.
   *
   * <p>The function is applied lazily, invoked when needed. This is necessary for the returned list
   * to be a view, but it means that the function will be applied many times for bulk operations

   *
   * @param hash the hash code for the key
   * @return the segment
   */
  Segment<K, V> segmentFor(int hash) {
    // TODO(fry): Lazily create segments?
    return segments[(hash >>> segmentShift) & segmentMask];
  }

  Segment<K, V> createSegment(
      int initialCapacity, long maxSegmentWeight, StatsCounter statsCounter) {

  }

  public void testToString() {
    // We can easily afford to test this exhaustively.
    for (int i = 0; i <= 0xff; i++) {
      assertThat(UnsignedBytes.toString((byte) i)).isEqualTo(Integer.toString(i));
    }
  }

  public void testToStringWithRadix() {
    // We can easily afford to test this exhaustively.

 * so.
 */
@GwtIncompatible
@ElementTypesAreNonnullByDefault
abstract class Striped64 extends Number {
  /*
   * This class maintains a lazily-initialized table of atomically
   * updated variables, plus an extra "base" field. The table size
   * is a power of two. Indexing uses masked per-thread hash codes.
   * Nearly all declarations in this class are package-private,

  // case, but we do check that its API still has the same public methods. We exclude some methods
  // that were added in Java 9 and that people probably weren't calling via Invokable, namely
  // `boolean canAccess(Object)` and `boolean trySetAccessible()`.
  public void testApiCompatibleWithAccessibleObject() {
    ImmutableSet<String> invokableMethods =

   *
   * @param hash the hash code for the key
   * @return the segment
   */
  Segment<K, V, E, S> segmentFor(int hash) {
    // TODO(fry): Lazily create segments?
    return segments[(hash >>> segmentShift) & segmentMask];
  }

  Segment<K, V, E, S> createSegment(int initialCapacity) {
    return entryHelper.newSegment(this, initialCapacity);
  }