assertThrows(NullPointerException.class, () -> getMap().putAll(null));
  }

  private void putAll(Iterable<Entry<K, V>> entries) {
    Map<K, V> map = new LinkedHashMap<>();
    for (Entry<K, V> entry : entries) {
      map.put(entry.getKey(), entry.getValue());
    }
    getMap().putAll(map);
  }

  /**
   * Returns the {@link Method} instance for {@link #testPutAll_nullKeyUnsupported()} so that tests

  }

  @LazyInit private transient @Nullable ColumnMap columnMap;

  @Override
  public Map<C, Map<R, @Nullable V>> columnMap() {
    ColumnMap map = columnMap;
    return (map == null) ? columnMap = new ColumnMap() : map;
  }

  @WeakOuter
  private final class ColumnMap extends ArrayMap<C, Map<R, @Nullable V>> {
    private ColumnMap() {
      super(columnKeyToIndex);
    }

    @Override

    }

    public void test_updateDocument_emptyDoc() {
        Map<String, Object> doc = new HashMap<>();

        languageHelper.updateDocument(doc);

        // Should not add any language fields
        assertNull(doc.get("lang"));
        assertEquals(0, doc.size());
    }

    public void test_updateDocument_skipExistingLangFields() {
        Map<String, Object> doc = new HashMap<>();
        doc.put("lang", "ja");

}

// cloneCaches will return a clone of all current caches.
func (b *bucketMetacache) cloneCaches() (map[string]metacache, map[string][]string) {
	b.mu.RLock()
	defer b.mu.RUnlock()
	dst := make(map[string]metacache, len(b.caches))
	maps.Copy(dst, b.caches)
	// Copy indexes
	dst2 := make(map[string][]string, len(b.cachesRoot))
	for k, v := range b.cachesRoot {
		tmp := make([]string, len(v))
		copy(tmp, v)

    /**
     * Sets multiple settings from a map.
     * @param map The map of settings to set.
     */
    public void set(final Map<String, Object> map) {
        if (logger.isDebugEnabled()) {
            logger.debug("Set suggest settings. {} {}", settingsIndexName, map.toString());
        }
        try {
            final XContentBuilder builder = JsonXContent.contentBuilder().map(map);
            builder.flush();

    public String getLogMessage() {
        return getSearchWord();
    }

    @Override
    public Map<String, Object> toSource() {
        final Map<String, Object> sourceMap = super.toSource();
        if (fields != null) {
            sourceMap.putAll(fields);
        }
        final Map<String, List<String>> searchFieldMap = searchFieldLogList.stream()

  @SuppressWarnings("ConstantCaseForConstants")
  private static final Map<Class<?>, Class<?>> PRIMITIVE_TO_WRAPPER_TYPE;

  /** A map from wrapper types to their corresponding primitive types. */
  // It's a constant, and we can't use ImmutableMap here without creating a circular dependency.
  @SuppressWarnings("ConstantCaseForConstants")
  private static final Map<Class<?>, Class<?>> WRAPPER_TO_PRIMITIVE_TYPE;

import static org.codelibs.fess.app.web.admin.plugin.AdminPluginAction.getAllInstalledArtifacts;
import static org.codelibs.fess.app.web.admin.plugin.AdminPluginAction.installArtifact;

import java.util.List;
import java.util.Map;

import org.codelibs.fess.app.web.api.ApiResult;
import org.codelibs.fess.app.web.api.admin.FessApiAdminAction;
import org.codelibs.fess.helper.PluginHelper.Artifact;
import org.codelibs.fess.util.ComponentUtil;

            };
        } else {
            return Nature.RELEASE;
        }
    }

    @Override
    public Map<String, String> getProperties() {
        return Collections.emptyMap();
    }

    @Override
    public Metadata setProperties(Map<String, String> properties) {
        return this;
    }

    @SuppressWarnings("deprecation")

    }

    /**
     * Processes a document map for web/file crawling with access result.
     * Default implementation delegates to the basic process method.
     *
     * @param target the document data to process
     * @param accessResult the access result from crawling
     * @return the processed document data
     */
    public Map<String, Object> process(final Map<String, Object> target, final AccessResult<String> accessResult) {