import java.io.Serializable;

import static java.util.Objects.requireNonNull;

public abstract class BaseObject implements Serializable, Cloneable {
    protected transient ChildrenTracking childrenTracking;

    protected Object delegate;

    public BaseObject() {}

    public BaseObject(Object delegate, BaseObject parent) {
        this.delegate = requireNonNull(delegate, "delegate cannot be null");

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

import org.codelibs.fess.app.web.api.admin.BaseSearchBody;

public class SearchBody extends BaseSearchBody {
    public String url;

    public Integer errorCountMin;

    public Integer errorCountMax;

    public String errorName;

import org.lastaflute.web.validation.exception.ValidationErrorException;

import jakarta.annotation.Resource;

/**
 * @author shinsuke
 */
public class AdminDictStemmeroverrideAction extends FessAdminAction {

    public static final String ROLE = "admin-dict";

    private static final Logger logger = LogManager.getLogger(AdminDictStemmeroverrideAction.class);

}
```

or

```groovy
public abstract class NewThing {
    public abstract Property<String> getSomeProperty()
    // special logic to integrate with something existing
}
```

This is not acceptable:

```groovy
public interface NewThing {
    Property<String> getSomeProperty()
}

abstract class DefaultNewThing implements NewThing {

import org.lastaflute.web.response.render.RenderData;
import org.lastaflute.web.ruts.process.ActionRuntime;

import jakarta.annotation.Resource;

/**
 * @author shinsuke
 */
public class AdminRelatedcontentAction extends FessAdminAction {

    public static final String ROLE = "admin-relatedcontent";

    private static final Logger logger = LogManager.getLogger(AdminRelatedcontentAction.class);

import org.lastaflute.web.response.render.RenderData;
import org.lastaflute.web.ruts.process.ActionRuntime;

import jakarta.annotation.Resource;

/**
 * @author shinsuke
 */
public class AdminBoostdocAction extends FessAdminAction {

    public static final String ROLE = "admin-boostdoc";

    private static final Logger logger = LogManager.getLogger(AdminBoostdocAction.class);

  public int lastIndexOf(@CheckForNull Object element) {
    return delegate().lastIndexOf(element);
  }

  @Override
  public ListIterator<E> listIterator() {
    return delegate().listIterator();
  }

  @Override
  public ListIterator<E> listIterator(int index) {
    return delegate().listIterator(index);
  }

  @CanIgnoreReturnValue
  @Override
  @ParametricNullness
  public E remove(int index) {

import org.lastaflute.web.ruts.process.ActionRuntime;

import jakarta.annotation.Resource;

/**
 * @author shinsuke
 * @author Keiichi Watanabe
 */
public class AdminRoleAction extends FessAdminAction {

    public static final String ROLE = "admin-role";

    private static final Logger logger = LogManager.getLogger(AdminRoleAction.class);

 * @deprecated use {@link org.apache.maven.api.services.ModelBuilder} instead
 */
@Deprecated(since = "4.0.0")
public class Os {

    /**
     * The OS Name.
     */
    public static final String OS_NAME = System.getProperty("os.name").toLowerCase(Locale.ENGLISH);

    /**
     * The OA architecture.
     */
    public static final String OS_ARCH = System.getProperty("os.arch").toLowerCase(Locale.ENGLISH);

    /**

 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *