errors.forEach(this.errors::add);
        }
    }

    /**
     * Returns the number of suggest documents.
     * @return The number of suggest documents.
     */
    public int getNumberOfSuggestDocs() {
        return numberOfSuggestDocs;
    }

    /**
     * Returns the number of input documents.
     * @return The number of input documents.
     */
    public int getNumberOfInputDocs() {

                        errors.addAll(res.getErrors());
                        numberOfSuggestDocs += res.getNumberOfSuggestDocs();
                        numberOfInputDocs += res.getNumberOfInputDocs();
                        queryLogs.clear();

                        Thread.sleep(requestInterval);
                    }

        SuggestIndexResponse indexResponse = suggester.indexer().indexFromQueryLog(new QueryLog(field + ":検索", null));
        assertEquals(1, indexResponse.getNumberOfInputDocs());
        assertEquals(1, indexResponse.getNumberOfSuggestDocs());
        assertFalse(indexResponse.hasError());

        suggester.refresh();