@DisplayName("Should handle null key in setKey")
        void testSetKeyWithNull() {
            // Test with mock
            doNothing().when(mockReferralData).setKey(null);
            assertDoesNotThrow(() -> mockReferralData.setKey(null));

            // Test with concrete implementation
            assertDoesNotThrow(() -> {
                concreteImplementation.setKey(null);

            referralData.setKey("test-key");
            referralData.replaceCache();
            assertEquals(referralData, cacheMap.get("test-key"));
        }

        @Test
        @DisplayName("Should replace cache entry with key")
        void testReplaceCache() {
            String key = "cache-key";
            referralData.setKey(key);
            referralData.setCacheMap(cacheMap);

     */
    public DES(final byte[] key) {
        if (key.length == 7) {
            final byte[] key8 = new byte[8];
            makeSMBKey(key, key8);
            setKey(key8);
        } else {
            setKey(key);
        }
    }

    /**
     * Converts a 7-byte SMB key to an 8-byte DES key with parity bits
     * @param key7 the 7-byte SMB key
     * @param key8 the output 8-byte DES key

        CrawlingInfoParam param1 = new CrawlingInfoParam();
        param1.setKey("total_docs");
        param1.setValue("1500");
        paramList.add(param1);

        CrawlingInfoParam param2 = new CrawlingInfoParam();
        param2.setKey("error_count");
        param2.setValue("3");
        paramList.add(param2);

            result.setCrawlingInfoId(DfTypeUtil.toString(source.get("crawlingInfoId")));
            result.setCreatedTime(DfTypeUtil.toLong(source.get("createdTime")));
            result.setKey(DfTypeUtil.toString(source.get("key")));
            result.setValue(DfTypeUtil.toString(source.get("value")));
            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {

                final CrawlingInfoParam crawlingInfoParam = new CrawlingInfoParam();
                crawlingInfoParam.setCrawlingInfoId(crawlingInfo.getId());
                crawlingInfoParam.setKey(entry.getKey());
                crawlingInfoParam.setValue(entry.getValue());
                crawlingInfoParamList.add(crawlingInfoParam);
            }
            getCrawlingInfoService().storeInfo(crawlingInfoParamList);

   */
  void insertEntry(
      int entryIndex, @ParametricNullness K key, @ParametricNullness V value, int hash, int mask) {
    this.setEntry(entryIndex, CompactHashing.maskCombine(hash, UNSET, mask));
    this.setKey(entryIndex, key);
    this.setValue(entryIndex, value);
  }

  /** Resizes the entries storage if necessary. */
  private void resizeMeMaybe(int newSize) {
    int entriesSize = requireEntries().length;

   */
  void insertEntry(
      int entryIndex, @ParametricNullness K key, @ParametricNullness V value, int hash, int mask) {
    this.setEntry(entryIndex, CompactHashing.maskCombine(hash, UNSET, mask));
    this.setKey(entryIndex, key);
    this.setValue(entryIndex, value);
  }

  /** Resizes the entries storage if necessary. */
  private void resizeMeMaybe(int newSize) {
    int entriesSize = requireEntries().length;

     */
    public String getKey() {
        return key;
    }

    /**
     * Sets the key.
     *
     * @param key
     *            the key
     */
    public void setKey(final String key) {
        this.key = key;
    }

    /**
     * Returns the charset name.
     *
     * @return the charset name
     */
    public String getCharsetName() {

        /**
         * @return Timestamp
         */
        public Timestamp getHhh() {
            return hhh_;
        }

        /**
         * @param hhh
         */
        public void setHhh(final Timestamp hhh) {
            hhh_ = hhh;
        }

        /**
         * @param iii
         */
        public void setIii(final String iii) {
        }

        /**