* @param replacement The replacement string.
     */
    public void add(final String target, final String replacement) {
        if (target == null || replacement == null) {
            throw new CrawlerSystemException("Target or replacement cannot be null.");
        }
        convertMap.put(target, replacement);
    }

    /**
     * Sets the conversion map.
     * @param convertMap The conversion map to set.

        final String[] emptyArray = new String[0];
        assertThat(ArrayUtil.addAll((Object[]) null, (Object[]) null), is(nullValue()));
        assertThat(ArrayUtil.addAll(null, emptyArray).length, is(0));
        assertThat(ArrayUtil.addAll(emptyArray, null), is(sameInstance(emptyArray)));
        assertThat(ArrayUtil.addAll(emptyArray, null), is(sameInstance(emptyArray)));

            if (!fetchMore()) {
                doClose();
                return null;
            }
            this.ridx = 0;
            return advance(true);
        }
        return null;
    }

    /**
     * Opens the enumeration and returns the first entry.
     *
     * @return the first file entry, or null if empty
     * @throws CIFSException if an error occurs during opening
     */

        if (sessionId != null) {
            builder.field(SESSION_ID, sessionId);
        }
        if (method != null) {
            builder.field(METHOD, method);
        }
        if (url != null) {
            builder.field(URL, url);
        }
        if (parentUrl != null) {
            builder.field(PARENT_URL, parentUrl);
        }
        if (depth != null) {
            builder.field(DEPTH, depth);

                instance,
                scope.scope(Key.get(WeakMojoExecutionListener.class), () -> instance)
                        .get());

        final MojoExecutionEvent event = new MojoExecutionEvent(null, null, null, null);
        scope.beforeMojoExecution(event);
        scope.afterMojoExecutionSuccess(event);
        scope.afterExecutionFailure(event);

        assertEquals(1, beforeExecution.get());

        setDomain(domain);
        setUser(user);

        if (password == null && passwordHash == null || !nonAnonymous && password != null && password.length() == 0) {
            setLMResponse(null);
            setNTResponse(null);
            return;
        }

        if (passwordHash == null) {
            passwordHash = NtlmUtil.getNTHash(password);
        }

            throws GraphConflictResolutionException {
        if (policy == null) {
            throw new GraphConflictResolutionException("no GraphConflictResolutionPolicy injected");
        }

        if (graph == null) {
            return null;
        }

        final MetadataGraphVertex entry = graph.getEntry();
        if (entry == null) {
            return null;
        }

        if (graph.isEmpty()) {

        if (accessResult != null) {
            final AccessResultData<?> accessResultData = accessResult.getAccessResultData();
            if (accessResultData != null && accessResultData.getEncoding() != null) {
                enc = accessResultData.getEncoding();
                parentEncodingMap.put(key, enc);
                return enc;
            }
        }
        return null;
    }

    /**

        if (username != null) {
            AccountAttempts account = accountAttempts.get(username);
            if (account != null) {
                account.reset();
            }
        }

        if (sourceIp != null) {
            IpAttempts ip = ipAttempts.get(sourceIp);
            if (ip != null) {
                ip.recordSuccess();
            }
        }

  private static final Iterable<@Nullable Integer> iterableNull = Arrays.asList((Integer) null);
  private static final Iterable<@Nullable Integer> iterableNullNull =
      Arrays.asList((Integer) null, null);
  private static final Iterable<@Nullable Integer> iterableNull1 = Arrays.asList(null, 1);
  private static final Iterable<@Nullable Integer> iterable1Null = Arrays.asList(1, null);