* Gets the list of installed artifacts of the specified type.
     *
     * @param artifactType the type of artifacts to retrieve
     * @return an array of installed artifacts
     */
    public Artifact[] getInstalledArtifacts(final ArtifactType artifactType) {
        if (artifactType == ArtifactType.UNKNOWN) {
            final File[] jarFiles = ResourceUtil.getPluginJarFiles((d, n) -> {

    @Test
    public void test_getInstalledArtifacts_unknown() {
        Artifact[] artifacts = pluginHelper.getInstalledArtifacts(ArtifactType.UNKNOWN);
        assertNotNull(artifacts);
    }

    @Test
    public void test_getInstalledArtifacts_dataStore() {
        Artifact[] artifacts = pluginHelper.getInstalledArtifacts(ArtifactType.DATA_STORE);
        assertNotNull(artifacts);
    }

    @Test