// Test getting ID after setting it
        dictionaryItem.id = 123L;
        assertEquals(123L, dictionaryItem.getId());
    }

    @Test
    public void test_getId_negativeValue() {
        // Test with negative ID value
        dictionaryItem.id = -456L;
        assertEquals(-456L, dictionaryItem.getId());
    }

    @Test
    public void test_getId_maxValue() {
        // Test with maximum Long value

import org.apache.commons.lang3.StringUtils;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.dict.DictionaryItem;

/**
 * Dictionary item for protected words.
 * This class represents a single protected word entry in the dictionary.
 */
public class ProtwordsItem extends DictionaryItem {
    private final String input;

    private String newInput;

    /**
     * Constructor for ProtwordsItem.

     * @return an OptionalEntity containing the dictionary file if found, empty otherwise
     */
    public OptionalEntity<DictionaryFile<? extends DictionaryItem>> getDictionaryFile(final String id) {
        for (final DictionaryFile<? extends DictionaryItem> dictFile : getDictionaryFiles()) {
            if (dictFile.getId().equals(id)) {
                return OptionalEntity.of(dictFile);
            }
        }

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.dict.DictionaryCreator;
import org.codelibs.fess.dict.DictionaryFile;
import org.codelibs.fess.dict.DictionaryItem;

import jakarta.annotation.PostConstruct;

/**
 * A dictionary creator for stopwords files.
 * This class is responsible for creating {@link StopwordsFile} instances

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.dict.DictionaryCreator;
import org.codelibs.fess.dict.DictionaryFile;
import org.codelibs.fess.dict.DictionaryItem;

import jakarta.annotation.PostConstruct;

/**
 * Creator for character mapping dictionary files.
 * Handles the creation and management of character mapping dictionaries used for text normalization.
 */

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.dict.DictionaryCreator;
import org.codelibs.fess.dict.DictionaryFile;
import org.codelibs.fess.dict.DictionaryItem;

import jakarta.annotation.PostConstruct;

/**
 * A dictionary creator for Kuromoji.
 */
public class KuromojiCreator extends DictionaryCreator {

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.dict.DictionaryCreator;
import org.codelibs.fess.dict.DictionaryFile;
import org.codelibs.fess.dict.DictionaryItem;

import jakarta.annotation.PostConstruct;

/**
 * A dictionary creator for stemmer override files.
 * This class is responsible for creating {@link StemmerOverrideFile} instances

import org.apache.commons.lang3.StringUtils;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.dict.DictionaryItem;

/**
 * Represents an item in a stopwords dictionary.
 * This class stores a stopword and tracks its updated value.
 */
public class StopwordsItem extends DictionaryItem {
    /** The original stopword. */
    private final String input;

    /** The new stopword, if updated. */

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.dict.DictionaryCreator;
import org.codelibs.fess.dict.DictionaryFile;
import org.codelibs.fess.dict.DictionaryItem;

import jakarta.annotation.PostConstruct;

/**
 * Creator for protected words dictionary files.
 * This class manages the creation and registration of protected words dictionary files.
 */

import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.dict.DictionaryItem;

/**
 * Represents an item in a synonym dictionary.
 * This class stores a set of input words and their corresponding output synonyms.
 * It also tracks updated values for the item.
 */
public class SynonymItem extends DictionaryItem {
    /** The original input words. */
    private final String[] inputs;