return response.isAcknowledged();
        } catch (final Exception e) {
            logger.warn("Failed to delete index: indexName={}", indexName, e);
        }
        return false;
    }

    /**
     * Rebuilds configuration indices with the latest mappings using atomic alias switching.
     * Only indices matching the specified target prefixes are rebuilt.

                    final Long primaryTerm = (Long) entity.remove(fessConfig.getIndexFieldPrimaryTerm());
                    if (seqNo != null && primaryTerm != null && oldId != null) {
                        searchEngineClient.delete(index, oldId, seqNo, primaryTerm);
                    }
                }

                searchEngineClient.store(index, entity);
                saveInfo(messages -> messages.addSuccessCrudUpdateCrudTable(GLOBAL));

                return false;
            }
            return createIndexResult;
        }

        @Override
        public boolean deleteIndex(final String indexName) {
            calledMethods.add("deleteIndex");
            deletedIndices.add(indexName);
            return deleteIndexResult;
        }

        @Override