@Override
  public int count(@CheckForNull Object element) {
    @Nullable ImmutableEntry<?>[] hashTable = this.hashTable;
    if (element == null || hashTable.length == 0) {
      return 0;
    }
    int hash = Hashing.smearedHash(element);
    int mask = hashTable.length - 1;
    for (ImmutableEntry<?> entry = hashTable[hash & mask];
        entry != null;
        entry = entry.nextInBucket()) {

        }
        outI++;
      }
      return outI == n ? hashTable : new Object[] {hashTable, outI, duplicateKey};
    } else {
      /*
       * Use 32 bits per entry.
       */
      int[] hashTable = new int[tableSize];
      Arrays.fill(hashTable, ABSENT);

      int outI = 0;
      entries:
      for (int i = 0; i < n; i++) {

          int index = j & mask;
          if (hashTable[index] == null) {
            hashTable[index] = e;
            break;
          }
        }
      }
      return hashTable;
    }

    void ensureTableCapacity(int minCapacity) {
      int newTableSize;
      if (hashTable == null) {
        newTableSize = chooseTableSize(minCapacity);
        hashTable = new Object[newTableSize];

        }
    }

    @Test
    fun `can handle Hashtable`() {
        val hashtable = Hashtable<String, Any>(100)
        hashtable.put("key1", "value1")
        hashtable.put("key2", true)
        hashtable.put("key3", 42)
        configurationCacheRoundtripOf(hashtable).run {
            assertThat(hashtable, equalTo(this))
        }
    }

public class LdapUser implements FessUser {

    private static final long serialVersionUID = 1L;

    protected Hashtable<String, String> env;

    protected String name;

    protected String[] permissions = null;

    public LdapUser(final Hashtable<String, String> env, final String name) {
        this.env = env;
        this.name = name;
    }

    @Override
    public String getName() {

          ImmutableSet<E> result;
          if (hashTable != null && chooseTableSize(size) == hashTable.length) {
            @Nullable
            Object[] uniqueElements =
                shouldTrim(size, contents.length) ? Arrays.copyOf(contents, size) : contents;
            result =
                new RegularImmutableSet<E>(
                    uniqueElements, hashCode, hashTable, hashTable.length - 1, size);
          } else {

        }
        fessConfig = ComponentUtil.getFessConfig();
    }

    protected Hashtable<String, String> createEnvironment(final String initialContextFactory, final String securityAuthentication,
            final String providerUrl, final String principal, final String credntials) {
        final Hashtable<String, String> env = new Hashtable<>();
        putEnv(env, Context.INITIAL_CONTEXT_FACTORY, initialContextFactory);

        this.hashTable = hashTable;
        int mask = hashTable.length - 1;
        for (ValueSetLink<K, V> entry = firstEntry;
            entry != this;
            entry = entry.getSuccessorInValueSet()) {
          ValueEntry<K, V> valueEntry = (ValueEntry<K, V>) entry;
          int bucket = valueEntry.smearedValueHash & mask;
          valueEntry.nextInValueBucket = hashTable[bucket];
          hashTable[bucket] = valueEntry;

        this.hashTable = hashTable;
        int mask = hashTable.length - 1;
        for (ValueSetLink<K, V> entry = firstEntry;
            entry != this;
            entry = entry.getSuccessorInValueSet()) {
          ValueEntry<K, V> valueEntry = (ValueEntry<K, V>) entry;
          int bucket = valueEntry.smearedValueHash & mask;
          valueEntry.nextInValueBucket = hashTable[bucket];
          hashTable[bucket] = valueEntry;

    }

    /**
     * {@link Hashtable}の新しいインスタンスを作成して返します。
     *
     * @param <K>
     *            {@link Hashtable}のキーの型
     * @param <V>
     *            {@link Hashtable}の値の型
     * @return {@link Hashtable}の新しいインスタンス
     * @see Hashtable#Hashtable()
     */
    public static <K, V> Hashtable<K, V> newHashtable() {
        return new Hashtable<>();
    }

    /**