assertTrue("add(null) should return true", collection.add(null));
    expectAdded((E) null);
  }

  @CollectionFeature.Require(value = SUPPORTS_ADD, absent = ALLOWS_NULL_VALUES)
  public void testAdd_nullUnsupported() {
    assertThrows(NullPointerException.class, () -> collection.add(null));
    expectUnchanged();
    expectNullMissingWhenNullUnsupported("Should not contain null after unsupported add(null)");
  }

   * <p>Values do not have to be unique. However, values must be non-null.
   *
   * <p>If {@code nodeU} and {@code nodeV} are not already present in this graph, this method will
   * silently {@link #addNode(Object) add} {@code nodeU} and {@code nodeV} to the graph.
   *
   * @return the value previously associated with the edge connecting {@code nodeU} to {@code
   *     nodeV}, or null if there was no such edge.

     * @return the resolved NbtAddress or null if not found
     */

    public synchronized static NbtAddress getByName(final String host) {
        return getByName(new Name(host, 0x20, null));
    }

    synchronized static NbtAddress getByName(final Name name) {
        NbtAddress result = null;

        try {
            if (FILENAME != null) {
                final File f = new File(FILENAME);

        if (synonymLoader.getSynonymMap() == null) {
            if (settings.getAsList("synonyms", null) != null) {
                logger.warn("synonyms values are empty.");
            } else if (settings.get("synonyms_path") != null) {
                logger.warn("synonyms_path[{}] is empty.", settings.get("synonyms_path"));
            } else {

        final String content = extractData.getContent();
        CloseableUtil.closeQuietly(in);
        logger.info(content);
        assertTrue(content.contains("Test"));
    }

    public void test_getTika_null() {
        try {
            tikaExtractor.getText(null, null);
            fail();
        } catch (final CrawlerSystemException e) {
            // NOP
        }
    }

        StopwordsFile.StopwordsUpdater updater = stopwordsFile.new StopwordsUpdater(null);

        StopwordsItem result = updater.commit();
        assertNull(result);

        updater.close();
    }

    public void test_updater_writeLine() {
        StopwordsFile.StopwordsUpdater updater = stopwordsFile.new StopwordsUpdater(null);

        // Test writing a comment line

     * value is undefined.
     *
     * @return The location of the problem, never {@code null}.
     */
    String getLocation();

    /**
     * Gets the exception that caused this problem (if any).
     *
     * @return The exception that caused this problem or {@code null} if not applicable.
     */
    Exception getException();

    /**
     * Gets the message that describes this problem.

        Metadata repoMetadata = metadata.getMetadata();
        String version = null;
        if (repoMetadata != null && repoMetadata.getVersioning() != null) {
            version = constructVersion(repoMetadata.getVersioning(), artifact.getBaseVersion());
        }

        if (version == null) {
            // use the local copy, or if it doesn't exist - go to the remote repo for it

        if (available != null) {
            addFieldToSource(sourceMap, "available", available);
        }
        if (crawler != null) {
            addFieldToSource(sourceMap, "crawler", crawler);
        }
        if (createdBy != null) {
            addFieldToSource(sourceMap, "createdBy", createdBy);
        }
        if (createdTime != null) {

                "test-grp", "test-artifact", VersionRange.createFromVersion("1.0"), "type", null, "system", "provided");
        Artifact artifact2 = factory.createDependencyArtifact(
                "test-grp", "test-artifact-2", VersionRange.createFromVersion("1.0"), "type", null, "system", "test");
        Artifact artifact3 = factory.createDependencyArtifact(
                "test-grp",