try {
            this.next = open();
            if ( this.next == null ) {
                doClose();
            }
        }
        catch ( Exception e ) {
            doClose();
            throw e;
        }

    }


    /**
     * @return the treeHandle
     */
    public final SmbTreeHandleImpl getTreeHandle () {
        return this.treeHandle;
    }


    /**

    }

    @Override
    public Class<?> next() {
        if (!hasNext()) {
            throw new NoSuchElementException();
        }
        final Class<?> result = clazz;
        clazz = clazz.getSuperclass();
        return result;
    }

    @Override
    public void remove() {
        throw new ClUnsupportedOperationException("remove");
    }

        short length = readShort();
        short maxLength = readShort();
        int pointer = readInt();

        if ( maxLength < length ) {
            throw new PACDecodingException("Malformed string in PAC");
        }

        return new PacUnicodeString(length, maxLength, pointer);
    }


    public String readString () throws IOException, PACDecodingException {

        if (Objects.requireNonNull(groupId, "groupId cannot be null").isEmpty()) {
            throw new IllegalArgumentException("groupId cannot be empty");
        }
        if (Objects.requireNonNull(artifactId, "artifactId cannot be null").isEmpty()) {
            throw new IllegalArgumentException("artifactId cannot be empty");
        }

        if (model != null) {

        if (jobProcess == null) {
            throw new JobNotFoundException("Job for " + sessionId + " is not found.");
        }
        try {
            final OutputStream out = jobProcess.getProcess().getOutputStream();
            IOUtils.write(command + "\n", out, Constants.CHARSET_UTF_8);
            out.flush();
        } catch (final IOException e) {
            throw new JobProcessingException(e);
        }
    }

    protected abstract Pattern getTagPattern();

    @Override
    public ExtractData getText(final InputStream in, final Map<String, String> params) {
        if (in == null) {
            throw new CrawlerSystemException("The inputstream is null.");
        }
        try {
            final BufferedInputStream bis = new BufferedInputStream(in);
            final String enc = getEncoding(bis);

   *
   * <p>This implementation is guaranteed to throw an {@link UnsupportedOperationException}.
   *
   * @throws UnsupportedOperationException always
   * @deprecated Unsupported operation.
   */
  @CanIgnoreReturnValue
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  @CheckForNull
  public final Entry<E> pollFirstEntry() {
    throw new UnsupportedOperationException();
  }

    throw new IntentionalException();
  }

  /** Local exception subclass to check variety of exception thrown. */
  class IntentionalException extends Exception {

    private static final long serialVersionUID = -2500191180248181379L;
  }

  @Subscribe
  public void errorThrowingMethod(Object arg) {
    throw new JudgmentError();
  }

  @Subscribe

                if (isTimeout) {
                    throw new SuggesterException("Request timeout. time:" + time + " unit:" + unit.name());
                }
                if (error != null) {
                    throw new SuggesterException(error);
                }
                return response;
            } catch (final InterruptedException e) {
                throw new InterruptedRuntimeException(e);
            }

        if (dup.add(values[0]) == false) {
            throw new IllegalArgumentException("Found duplicate term [" + values[0] + "] in user dictionary.");
        }
        return rule;
    }

    public static UserDictionary getUserDictionary(Environment env, Settings settings) {
        if (settings.get(USER_DICT_PATH_OPTION) != null && settings.get(USER_DICT_RULES_OPTION) != null) {
            throw new IllegalArgumentException(