*       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)
 *   <li>methods whose return type is a type variable but which can return {@code null} regardless
 *       of the type argument supplied by the user of the class: For example, {@code

 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)
 *   <li>methods whose return type is a type variable but which can return {@code null} regardless
 *       of the type argument supplied by the user of the class: For example, {@code

 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)
 *   <li>methods whose return type is a type variable but which can return {@code null} regardless
 *       of the type argument supplied by the user of the class: For example, {@code

 *       ImmutableList.get} returns {@code E}, but that value is never {@code null}. (Accordingly,
 *       {@code ImmutableList} is declared to forbid {@code ImmutableList<@Nullable String>}.)
 *   <li>methods whose return type is a type variable but which can return {@code null} regardless
 *       of the type argument supplied by the user of the class: For example, {@code

 * It is designed to avoid the instantiation.
 */
public final class Constants {
    /**
     * The GET method.
     */
    public static final String GET_METHOD = "GET";

    /**
     * The HEAD method.
     */
    public static final String HEAD_METHOD = "HEAD";

    /**
     * The POST method.
     */

import org.codelibs.fess.suggest.util.SuggestUtil;
import org.opensearch.action.bulk.BulkItemResponse;
import org.opensearch.action.bulk.BulkRequestBuilder;
import org.opensearch.action.bulk.BulkResponse;
import org.opensearch.action.get.GetResponse;
import org.opensearch.action.index.IndexAction;
import org.opensearch.action.index.IndexRequest;
import org.opensearch.action.index.IndexRequestBuilder;
import org.opensearch.index.query.QueryBuilder;

    assertTrue(future.isDone());
    assertTrue(future.isCancelled());
  }

  public void testAwaitClear() {
    WeakReference<Object> ref = createWeakReference();
    GcFinalization.awaitClear(ref);
    assertThat(ref.get()).isNull();
  }

  private WeakReference<Object> createWeakReference() {
    return new WeakReference<>(new Object());
  }

  public void testAwaitDone_finalizationPredicate() {

    final Table<R, C, MutableCell<R, C, V>> table = HashBasedTable.create();

    void put(R row, C column, V value, BinaryOperator<V> merger) {
      MutableCell<R, C, V> oldCell = table.get(row, column);
      if (oldCell == null) {
        MutableCell<R, C, V> cell = new MutableCell<>(row, column, value);
        insertionOrder.add(cell);
        table.put(row, column, cell);
      } else {

      Entry<Object, Object> expectedEntry = immutableEntry(expectedKey, expectedValue);
      assertEquals(expectedEntry, entries.get(i));
      assertEquals(expectedKey, keys.get(i));
      assertEquals(expectedValue, values.get(i));
    }
  }

  public void testAllocArraysDefault() {
    CompactLinkedHashMap<Integer, String> map = CompactLinkedHashMap.create();

  }

  public void testOf() {
    assertThat(Optional.of("training").get()).isEqualTo("training");
  }

  public void testOf_null() {
    assertThrows(NullPointerException.class, () -> Optional.of(null));
  }

  public void testFromNullable() {
    Optional<String> optionalName = Optional.fromNullable("bob");
    assertThat(optionalName.get()).isEqualTo("bob");
  }

  public void testFromNullable_null() {