final String indexName;
                if (isFessIndex) {
                    final boolean exists = existsIndex(fessConfig.getIndexDocumentUpdateIndex());
                    if (!exists) {
                        indexName = generateNewIndexName(configIndex);
                        createIndex(configIndex, indexName);
                        createAlias(configIndex, indexName);
                    } else {

}

// validateIndexers will check the prefix of indexers.
func validateIndexers(indexers *cache.Indexers) error {
	if indexers == nil {
		return nil
	}
	for indexName := range *indexers {
		if len(indexName) <= 2 || (indexName[:2] != "l:" && indexName[:2] != "f:") {
			return fmt.Errorf("index must prefix with \"l:\" or \"f:\"")
		}
	}
	return nil

			expiredWatchers = append(expiredWatchers, watchers)
		}
	}
	return expiredWatchers
}

type filterWithAttrsFunc func(key string, l labels.Set, f fields.Set) bool

type indexedTriggerFunc struct {
	indexName   string
	indexerFunc storage.IndexerFunc
}

// Cacher is responsible for serving WATCH and LIST requests for a given
// resource from its internal cache and updating its cache in the background

		}
		assert.ElementsMatch(t, expected, indexes)
	}

	uniqueIndex := &migrator.Index{TableName: table, NameValue: DB.Config.NamingStrategy.IndexName(table, "name"), ColumnList: []string{"name"}, PrimaryKeyValue: sql.NullBool{Bool: false, Valid: true}, UniqueValue: sql.NullBool{Bool: true, Valid: true}}