this.existNextPage = existNextPage;
    }

    /**
     * Gets the number of records per page.
     * If page size is not set or invalid, returns the default page size.
     *
     * @return the page size
     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

import jakarta.validation.constraints.Size;

/**
 * Form class for chat requests.
 *
 * @author FessProject
 */
public class ChatForm {

    /**
     * Default constructor.
     */
    public ChatForm() {
        // Default constructor
    }

    /**
     * The user's message/question.
     */
    @Size(max = 4000)
    public String message;

    /**

        assertEquals(1, result.get(ConfigName.CONFIG).size());
        assertEquals(1, result.get(ConfigName.CLIENT).size());
        assertEquals(1, result.get(ConfigName.XPATH).size());
        assertEquals(1, result.get(ConfigName.META).size());
        assertEquals(1, result.get(ConfigName.VALUE).size());
        assertEquals(1, result.get(ConfigName.SCRIPT).size());
        assertEquals(1, result.get(ConfigName.FIELD).size());

import org.lastaflute.web.validation.Required;

import jakarta.validation.constraints.Size;

/**
 * Request body for plugin installation API.
 * This class represents the data structure for installing a plugin
 * through the admin REST API.
 */
public class InstallBody {
    /** Name of the plugin to install (required, max 100 characters) */
    @Required
    @Size(max = 100)
    public String name;

    /**
     * Default constructor.

     */
    @Required
    @Size(max = 1000)
    public String id;

    /**
     * The session identifier of the crawling session.
     * This is a required field that identifies the specific crawling session.
     * Maximum length is 20 characters.
     */
    @Required
    @Size(max = 20)
    public String sessionId;

    /**

    @CustomSize(maxKey = "form.admin.max.input.size")
    public String includedPaths;

    /**
     * The paths to exclude for this label type.
     */
    @CustomSize(maxKey = "form.admin.max.input.size")
    public String excludedPaths;

    /**
     * The permissions required to view this label type.
     */
    @CustomSize(maxKey = "form.admin.max.input.size")
    public String permissions;

    /**

        assertNotNull(session.getMessages());
        assertEquals(1, session.getMessages().size());
    }

    @Test
    public void test_addUserMessage() {
        final ChatSession session = new ChatSession();
        session.addUserMessage("User message content");

        assertEquals(1, session.getMessages().size());
        assertEquals(ChatMessage.ROLE_USER, session.getMessages().get(0).getRole());

    }

    /**
     * Returns the page size.
     *
     * @return The page size.
     */
    public int getPageSize() {
        if (pageSize <= 0) {
            pageSize = getDefaultPageSize();
        }
        return pageSize;
    }

    /**
     * Sets the page size.
     *
     * @param pageSize The page size.
     */
    public void setPageSize(final int pageSize) {

        br.addElement(" in " + getClass().getSimpleName() + ".");
        br.addItem("Content Type");
        br.addElement(contentType);
        br.addItem("Boundary Size");
        br.addElement(boundarySize);
        br.addItem("Limit Size");
        br.addElement(limitSize);
        final String msg = br.buildExceptionMessage();

    /**
     * The name of the scheduled job.
     */
    @Required
    @Size(max = 100)
    public String name;

    /**
     * The target class for the scheduled job.
     */
    @Required
    @Size(max = 100)
    public String target;

    /**
     * The cron expression defining when the job should run.
     */
    @Size(max = 100)
    @CronExpression
    public String cronExpression;

    /**