OptionalEntity<ProtwordsItem> item = protwordsFile.get(1);
        assertTrue(item.isPresent());
        assertEquals("test1", item.get().getInput());
        assertEquals(1, item.get().getId());
    }

    public void test_get_notFound() {
        // Load data first
        protwordsFile.reload(null);

        // Test getting non-existing item

public interface Artifact {
    /**
     * {@return a unique identifier for this artifact}.
     * The identifier is composed of groupId, artifactId, extension, classifier, and version.
     *
     * @see ArtifactCoordinates#getId()
     */
    @Nonnull
    default String key() {
        String c = getClassifier();
        return getGroupId()
                + ':'
                + getArtifactId()
                + ':'

                .actionGet(settings.getSearchTimeout());
        String scrollId = response.getScrollId();
        try {
            while (scrollId != null) {
                final SearchHit[] hits = response.getHits().getHits();
                if (hits.length == 0) {
                    break;
                }
                for (final SearchHit hit : hits) {
                    final Map<String, Object> source = hit.getSourceAsMap();

                    anonymous = true;
                }

                if (ex != null) {
                    throw ex;
                }

                setUid(response.getUid());

                if (request.getDigest() != null) {
                    /* success - install the signing digest */
                    setDigest(request.getDigest());

                        + "\"}}\n" + hit.getSourceAsString() + "\n";
                try {
                    zos.write(data.getBytes(Constants.CHARSET_UTF_8));
                } catch (final IOException e) {
                    logger.warn("Failed to access /{}/{}.", index, hit.getId(), e);
                }
                return true;
            });

        assertEquals(1L, item1.getId());
        assertArrayEquals(new String[] { "a", "b" }, item1.getInputs());
        assertEquals("c", item1.getOutput());

        OptionalEntity<CharMappingItem> result2 = charMappingFile.get(2L);
        assertTrue(result2.isPresent());
        CharMappingItem item2 = result2.get();
        assertEquals(2L, item2.getId());

     *
     * @return domain SID
     */
    SID getDomainSid();

    /**
     * Get the RID
     *
     * This is the last subauthority identifier
     *
     * @return the RID
     */
    int getRid();

    /**
     * Return a String representing this SID ideal for display to
     * users. This method should return the same text that the ACL
     * editor in Windows would display.
     * <p>

     * @param kuromojiItem The Kuromoji item to store.
     */
    public void store(final String dictId, final KuromojiItem kuromojiItem) {
        getKuromojiFile(dictId).ifPresent(file -> {
            if (kuromojiItem.getId() == 0) {
                file.insert(kuromojiItem);
            } else {
                file.update(kuromojiItem);
            }
        });
    }

    /**
     * Delete a Kuromoji item.
     *

    }

    private boolean isLocalRepository(ArtifactRepository repository) {
        // unfortunately, the API doesn't allow to tell a remote repo and the local repo apart...
        return "local".equals(repository.getId());
    }

        List<Artifact> trial = getTrail();

        List<String> ret = new ArrayList<>(trial.size());

        for (Artifact artifact : trial) {
            ret.add(artifact.getId());
        }

        return ret;
    }

    private List<Artifact> getTrail() throws OverConstrainedVersionException {
        if (trail == null) {
            List<Artifact> ids = new LinkedList<>();