* including data stores, themes, ingest processors, scripts, web applications, thumbnails, and crawlers.
 */
public class PluginHelper {
    /** Logger instance for this class */
    private static final Logger logger = LogManager.getLogger(PluginHelper.class);

    /**
     * Cache for storing available artifacts by type.
     * The cache expires after 5 minutes and has a maximum size of 10 entries.
     */

        assertNull(pluginHelper.getArtifact(null, "1.0.0"));
        assertNull(pluginHelper.getArtifact("test", null));
        assertNull(pluginHelper.getArtifact("", "1.0.0"));
        assertNull(pluginHelper.getArtifact("test", ""));
    }

    public void test_isExcludedName_crawler() {
        assertTrue(pluginHelper.isExcludedName(ArtifactType.CRAWLER, "fess-crawler"));

    public static List<Map<String, String>> getAllAvailableArtifacts() {
        final PluginHelper pluginHelper = ComponentUtil.getPluginHelper();
        final List<Map<String, String>> result = new ArrayList<>();
        for (final PluginHelper.ArtifactType artifactType : PluginHelper.ArtifactType.values()) {
            result.addAll(Arrays.stream(pluginHelper.getAvailableArtifacts(artifactType))
                    .map(AdminPluginAction::beanToMap)

    private static final String SEARCH_HELPER = "searchHelper";

    private static final String THEME_HELPER = "themeHelper";

    private static final String PLUGIN_HELPER = "pluginHelper";

    private static final String LANGUAGE_HELPER = "languageHelper";

    private static final String CURL_HELPER = "curlHelper";

import java.util.jar.JarEntry;
import java.util.jar.JarOutputStream;

import org.codelibs.fess.ds.callback.IndexUpdateCallback;
import org.codelibs.fess.entity.DataStoreParams;
import org.codelibs.fess.helper.PluginHelper;
import org.codelibs.fess.helper.SystemHelper;
import org.codelibs.fess.opensearch.config.exentity.DataConfig;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;

import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

import org.codelibs.fess.exception.ThemeException;
import org.codelibs.fess.helper.PluginHelper.Artifact;
import org.codelibs.fess.unit.UnitFessTestCase;

public class ThemeHelperTest extends UnitFessTestCase {

    private ThemeHelper themeHelper;
    private Path tempDir;

    @Override