assertThat(future.set(1)).isTrue();
    assertSuccessful(future, 1);
  }

  /** Concrete subclass for testing. */
  private static class TestedFuture<V extends @Nullable Object> extends AbstractFuture<V> {
    private static <V extends @Nullable Object> TestedFuture<V> create() {
      return new TestedFuture<V>();
    }
  }

  private static final class CountingRunnable implements Runnable {
    int count;

package org.codelibs.fess.app.web.api.admin.pathmap;

import org.codelibs.fess.app.web.admin.pathmap.CreateForm;

/**
 * Request body for creating path mapping via REST API.
 * Extends CreateForm to inherit validation and field definitions.
 */
public class CreateBody extends CreateForm {

    /**
     * Creates a new CreateBody instance.
     */
    public CreateBody() {
    }

 */
package org.codelibs.fess.app.web.api.admin.user;

import org.codelibs.fess.app.web.admin.user.CreateForm;

/**
 * Request body for creating user via REST API.
 * Extends CreateForm to inherit validation and field definitions.
 */
public class CreateBody extends CreateForm {

    /**
     * Creates a new CreateBody instance.
     */
    public CreateBody() {
    }

import org.codelibs.fess.app.web.admin.webauth.CreateForm;

/**
 * Request body for creating web authentication via REST API.
 * Extends CreateForm to inherit validation and field definitions.
 */
public class CreateBody extends CreateForm {

    /**
     * Creates a new CreateBody instance.
     */
    public CreateBody() {
    }

package org.codelibs.fess.app.web.api.admin.badword;

import org.codelibs.fess.app.web.admin.badword.CreateForm;

/**
 * Request body for creating bad word via REST API.
 * Extends CreateForm to inherit validation and field definitions.
 */
public class CreateBody extends CreateForm {

    /**
     * Creates a new CreateBody instance.
     */
    public CreateBody() {
    }

import org.codelibs.fess.app.web.api.admin.dict.BaseSearchDictBody;

/**
 * Search request body for Kuromoji dictionary administration.
 * Extends BaseSearchDictBody with Kuromoji dictionary-specific search parameters.
 */
public class SearchBody extends BaseSearchDictBody {

    /**
     * Default constructor for SearchBody.
     */
    public SearchBody() {
        super();
    }

import org.codelibs.fess.app.web.admin.duplicatehost.CreateForm;

/**
 * Request body for creating duplicate host via REST API.
 * Extends CreateForm to inherit validation and field definitions.
 */
public class CreateBody extends CreateForm {

    /**
     * Creates a new CreateBody instance.
     */
    public CreateBody() {
    }

import org.codelibs.fess.app.web.admin.fileauth.CreateForm;

/**
 * Request body for creating file authentication via REST API.
 * Extends CreateForm to inherit validation and field definitions.
 */
public class CreateBody extends CreateForm {

    /**
     * Creates a new CreateBody instance.
     */
    public CreateBody() {
    }

/**
 * Creates collections, containing sample elements, to be tested.
 *
 * @author Kevin Bourrillion
 */
@GwtCompatible
@NullMarked
public interface TestCollectionGenerator<E extends @Nullable Object>

/**
 * Helper interface to implement both {@link ListenableFuture} and {@link ScheduledFuture}.
 *
 * @author Anthony Zana
 * @since 15.0
 */
@GwtCompatible
public interface ListenableScheduledFuture<V extends @Nullable Object>