And an `APIRoute` subclass to use that custom request class.

### Create a custom `GzipRequest` class { #create-a-custom-gziprequest-class }

/// tip

This is a toy example to demonstrate how it works, if you need Gzip support, you can use the provided [`GzipMiddleware`](../advanced/middleware.md#gzipmiddleware){.internal-link target=_blank}.

///

    }

    /**
     * Creates a new document in the search index.
     *
     * @param form the create form containing document data
     * @return HTML response redirecting to the list page after creation
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse create(final CreateForm form) {
        verifyCrudMode(form.crudMode, CrudMode.CREATE);

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

/**
 * Request body for creating related content 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.relatedquery.CreateForm;

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

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

import jakarta.annotation.Resource;

/**
 * Service class for managing related content entities.
 * This service provides CRUD operations for related content, including
 * retrieval, storage, deletion, and search functionality.
 */
public class RelatedContentService extends FessAppService {

    /**
     * Default constructor.
     * Creates a new instance of RelatedContentService.
     */
    public RelatedContentService() {

  }

  /**
   * Returns a string representation of x, where x is treated as unsigned.
   *
   * <p><b>Java 8+ users:</b> use {@link Long#toUnsignedString(long)} instead.
   */
  public static String toString(long x) {
    return toString(x, 10);
  }

  /**
   * Returns a string representation of {@code x} for the given radix, where {@code x} is treated as
   * unsigned.
   *

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

    /**
     * Creates and returns a <code>JarFile</code> to read the specified JAR file.
     *
     * @param file the file path (must not be {@literal null})
     * @return a <code>JarFile</code> to read the specified JAR file
     */
    public static JarFile create(final String file) {
        assertArgumentNotNull("file", file);

        try {

     */
    public static InputStreamReader create(final InputStream is, final String encoding) {
        assertArgumentNotNull("is", is);
        assertArgumentNotEmpty("encoding", encoding);

        try {
            return new InputStreamReader(is, encoding);
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.exception;

/**
 * Exception for plugin-related errors.
 */
public class PluginException extends FessSystemException {

    private static final long serialVersionUID = 1L;

    /**
     * Creates a plugin exception with message and cause.
     *
     * @param message the error message
     * @param cause the cause
     */

     */
    @Nonnull
    Artifact create(@Nonnull ArtifactFactoryRequest request);

    @Nonnull
    default Artifact create(
            @Nonnull Session session, String groupId, String artifactId, String version, String extension) {
        return create(ArtifactFactoryRequest.build(session, groupId, artifactId, version, extension));
    }

    @Nonnull
    default Artifact create(
            @Nonnull Session session,