* @return true if the operation was successful, false otherwise.
     */
    public boolean deleteAllWords() {
        final SuggestDeleteResponse response = suggester.indexer().deleteAll();
        if (response.hasError()) {
            logger.warn("Failed to delete all words.", response.getErrors().get(0));
            return false;
        }
        refresh();
        return true;
    }

    /**

    private static class MockBadWordSettings {
        public void deleteAll() {
            // Mock implementation
        }
    }

    private static class MockSuggestDeleteResponse {
        public boolean hasError() {
            return false;
        }

        public List<Throwable> getErrors() {
            return new ArrayList<>();
        }
    }