}

    /**
     * Null pointer scenario – calls on a null reference should raise
     * {@link NullPointerException}. This test is defensive; in real code it
     * would likely be handled elsewhere.
     */
    @Test
    @DisplayName("calling getters on null reference throws NPE")
    void testNullReference() {
        AllocInfo nullRef = null;

///

## Types and validation { #types-and-validation }

These environment variables can only handle text strings, as they are external to Python and have to be compatible with other programs and the rest of the system (and even with different operating systems, as Linux, Windows, macOS).

import org.apache.logging.log4j.Logger;
import org.codelibs.fess.util.ComponentUtil;

import jakarta.annotation.PostConstruct;

/**
 * View class for managing facet query configurations and their display.
 * This class handles the setup and organization of query facets for the search interface,
 * including automatic generation of file type facets and custom query mappings.
 */
public class FacetQueryView {
    /** Logger instance for this class */

            }

            setupMockConfig("localhost:9200", "", "", invalidCertFile.getAbsolutePath());

            curlHelper.init();

            // Should handle invalid certificate gracefully
            SSLSocketFactory sslSocketFactory = getSSLSocketFactory(curlHelper);
            assertNull(sslSocketFactory);

        } catch (IOException e) {

        getSubject();
        return this;
    }

    /**
     * {@inheritDoc}
     *
     * @see javax.security.auth.callback.CallbackHandler#handle(javax.security.auth.callback.Callback[])
     */
    @Override
    public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
        for (Callback cb : callbacks) {
            if (log.isDebugEnabled()) {

import org.lastaflute.web.validation.theme.conversion.ValidateTypeFailure;

import jakarta.validation.constraints.Size;

/**
 * Form class for editing crawling information in the admin interface.
 * This form handles the editing of crawling session data, which tracks
 * the status and metadata of web crawling operations.
 *
 */
public class EditForm {

    /**
     * Creates a new EditForm instance.
     */

import javax.security.auth.kerberos.KerberosKey;
import javax.security.auth.login.LoginContext;
import javax.security.auth.login.LoginException;

/**
 * Kerberos credentials management class that handles authentication through JAAS.
 */
public class KerberosCredentials {

    private Subject subject;

    /**
     * Creates KerberosCredentials using the default JAAS configuration.
     *

import jakarta.annotation.Resource;

/**
 * Service class for managing group operations in the Fess application.
 * Provides CRUD operations for groups, including integration with LDAP manager
 * and user-group relationships. Handles group pagination, searching, and
 * maintaining data consistency between groups and associated users.
 */
public class GroupService {

    /** Behavior class for group database operations */
    @Resource

        // when proper conditions are not met.

        Map<String, Object> docMap = new HashMap<>();

        // This will return false because getFessConfig() will fail
        // We verify the method handles the case gracefully
        try {
            emptyGenerator.isTarget(docMap);
        } catch (IllegalStateException e) {
            // Expected when container is not initialized

import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.Arrays;
import org.jspecify.annotations.Nullable;

/**
 * Abstract implementation of {@link InvocationHandler} that handles {@link Object#equals}, {@link
 * Object#hashCode} and {@link Object#toString}. For example:
 *
 * <pre>
 * class Unsupported extends AbstractInvocationHandler {