* 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.
     */

    public void test_getArtifact_nullInputs() {
        assertNull(pluginHelper.getArtifact(null, "1.0.0"));
        assertNull(pluginHelper.getArtifact("test", null));
        assertNull(pluginHelper.getArtifact("", "1.0.0"));
        assertNull(pluginHelper.getArtifact("test", ""));
    }

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

		<property name="osddPath">"/WEB-INF/orig/open-search/osdd.xml"</property>
		<property name="encoding">"UTF-8"</property>
	</component>
	<component name="pluginHelper" class="org.codelibs.fess.helper.PluginHelper">
	</component>
	<component name="popularWordHelper" class="org.codelibs.fess.helper.PopularWordHelper">
	</component>
	<component name="queryHelper" class="org.codelibs.fess.helper.QueryHelper">

    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";