if (delegate != null) {
      metadata =
          Ints.constrainToRange(size(), CompactHashing.DEFAULT_SIZE, CompactHashing.MAX_SIZE);
      delegate.clear(); // invalidate any iterators left over!
      table = null;
      size = 0;
    } else {
      Arrays.fill(requireKeys(), 0, size, null);
      Arrays.fill(requireValues(), 0, size, null);
      CompactHashing.tableClear(requireTable());

        if (this.origin_server != null) {
            resolveWeak();
        }
        if (this.type == SID_TYPE_UNKNOWN) {
            final String full = toString();
            return full.substring(0, full.length() - getAccountName().length() - 1);
        }
        return this.domainName;
    }

    @Override
    public String getAccountName() {
        if (this.origin_server != null) {
            resolveWeak();

     */
    public static String toString(final Object obj) {
        return obj == null ? null : obj.toString();
    }

    /**
     * Returns the object, or the defaultValue if the object is <code>null</code>.
     * <p>
     * Usage example:
     * </p>
     *
     * <pre>
     * ObjectUtil.defaultValue(null, "NULL")  = "NULL"
     * ObjectUtil.defaultValue(null, 1)    = 1

            long id = 0;
            String line = null;
            while ((line = reader.readLine()) != null) {
                // Remove comments
                final String replacedLine = line.replaceAll("#.*$", StringUtil.EMPTY).trim();

                // Skip empty lines or comment lines
                if (replacedLine.length() == 0) {
                    if (updater != null) {
                        updater.write(line);

                                    propertyName, valueClass == null ? null : valueClass.getName(),
                                    valueClass == null ? null : valueClass.getClassLoader(), convertedValue,
                                    targetClass == null ? null : targetClass.getName(),
                                    targetClass == null ? null : targetClass.getClassLoader() }).initCause(t);
                }

            "keyword", 0, 0, null, null, false, null, null, null, null, null, false);
    protected final ColumnInfo _columnSearchWord = cci("searchWord", "searchWord", null, null, String.class, "searchWord", null, false,
            false, false, "keyword", 0, 0, null, null, false, null, null, null, null, null, false);

     * StringUtil.defaultString("aaa", "NULL") = "aaa"
     * StringUtil.defaultString("aaa", null)   = "aaa"
     * StringUtil.defaultString(null, null)    = null
     * </pre>
     *
     * @param str
     *            the string (can be <code>null</code>)
     * @param defaultStr
     *            the string to return if the argument is <code>null</code> (can be <code>null</code>)

   * {@code IllegalStateException} if this queue is full.
   *
   * @param e the element to add
   * @return {@code true} (as specified by {@link Collection#add})
   * @throws IllegalStateException if this queue is full
   * @throws NullPointerException if the specified element is null
   */
  @CanIgnoreReturnValue
  @Override
  public boolean add(E e) {
    return super.add(e);

        if (entry == null)
            return false;

        LeaseManager.LeaseEntry leaseEntry = baseLeaseManager.getLease(entry.getLeaseKey());
        return leaseEntry != null && leaseEntry.hasReadCache();
    }

    /**
     * Get cached directory listing
     *
     * @param directoryPath directory path
     * @return list of cached files or null
     */

    }
    // ------------------------------------------------------------------------
    public MetadataGraphVertex addVertex(ArtifactMetadata md) {
        if (md == null) {
            return null;
        }

        checkVertices();

        MetadataGraphVertex v = findVertex(md);
        if (v != null) {
            return v;
        }

        v = new MetadataGraphVertex(md);