import org.opensearch.action.update.UpdateRequest;
import org.opensearch.action.update.UpdateRequestBuilder;
import org.opensearch.action.update.UpdateResponse;
import org.opensearch.cluster.metadata.MappingMetadata;
import org.opensearch.common.action.ActionFuture;
import org.opensearch.common.document.DocumentField;
import org.opensearch.common.settings.Settings;
import org.opensearch.common.settings.Settings.Builder;

            resultData.setTransformerName(getName());
            return resultData;
        }

        @Override
        public Object getData(AccessResultData<?> accessResultData) {
            return accessResultData != null ? accessResultData.getData() : null;
        }

        public int getTransformCallCount() {
            return transformCallCount;
        }

            try {
                resultData.setData(data.getBytes(charsetName));
            } catch (final UnsupportedEncodingException e) {
                if (logger.isInfoEnabled()) {
                    logger.info("Invalid charsetName: " + charsetName + ". Changed to " + Constants.UTF_8, e);
                }
                charsetName = Constants.UTF_8_CHARSET.name();
                resultData.setData(data.getBytes(Constants.UTF_8_CHARSET));

     */
    public void setSerializer(final Function<Object, byte[]> serializer) {
        this.serializer = serializer;
    }

    /**
     * Get the data.
     * @return data
     */
    public byte[] getData() {
        if (data == null) {
            if (serializer == null || rawData == null) {
                throw new CrawlerSystemException("serializer or rawData is null");
            }

     *
     * @param data the data buffer to write
     * @param offset the offset in the data buffer
     * @param length the number of bytes to write
     */
    public void setData(final byte[] data, final int offset, final int length) {
        this.data = data;
        this.dataOffset = offset;
        this.dataLength = length;
    }

    /**

            assertDoesNotThrow(() -> request.setData(data, 0, data.length));
        }

        @Test
        @DisplayName("Should set data with partial buffer")
        void testSetDataPartialBuffer() {
            byte[] data = new byte[1024];
            new Random().nextBytes(data);

            assertDoesNotThrow(() -> request.setData(data, 100, 500));
        }

        @Test

    /**
     * Test the constructor and the getData method.
     */
    @Test
    void testConstructorAndGetData() {
        // Create a mock DfsReferralData object
        DfsReferralData mockData = mock(DfsReferralData.class);

        // Create a DfsReferral instance with the mock data
        DfsReferral dfsReferral = new DfsReferral(mockData);

        // Verify that getData() returns the same mock data object

            assertEquals(1, testResponse.getDecodeCallCount());
            assertNotNull(testResponse.getData());
            assertEquals(length, testResponse.getData().length);

            // Verify data was copied correctly
            for (int i = 0; i < length; i++) {
                assertEquals(testBuffer[10 + i], testResponse.getData()[i]);
            }
        }

        @Test

        assertEquals(numberOfMessages, response.getNumberOfMessages());
        assertEquals(messageLength, response.getMessageLength());
        assertNotNull(response.getData());
        assertEquals(0, response.getData().length);
        // The decode method returns only the header size (16 bytes)\n        assertEquals(16, bytesDecoded);
    }

    @Test
    @DisplayName("Test decode with non-zero buffer index")

        AccessResultDataImpl<?> accessResultData = new AccessResultDataImpl<>();
        accessResultData.setData(xml.getBytes("UTF-8"));
        accessResultData.setEncoding("UTF-8");

        Map<String, Object> dataMap = XmlUtil.getDataMap(accessResultData);
        assertNotNull(dataMap);