String[] inputs = { "input" };
        CharMappingItem item = new CharMappingItem(1L, inputs, "output");

        // Test newline replacement in setNewOutput
        item.setNewOutput("line1\nline2\nline3");
        assertEquals("line1 line2 line3", item.getNewOutput());
    }

    public void test_setNewOutput_withNull() {
        String[] inputs = { "input" };
        CharMappingItem item = new CharMappingItem(1L, inputs, "output");

     * The file is newline separated. The first two lines are the URL and the request method. Next
     * is the number of HTTP Vary request header lines, followed by those lines.
     *
     * Next is the response status line, followed by the number of HTTP response header lines,
     * followed by those lines.
     *
     * HTTPS responses also contain SSL session information. This begins with a blank line, and then

            assertTrue(true);
        }
    }

    public void test_reload_withEmptyLines() throws Exception {
        // Create content with empty lines and comments
        String content = "# Comment line\n" + "\n" + // empty line
                "word1\n" + "  \n" + // whitespace line (may be treated as content)
                "# Another comment\n" + "word2\n";

        // Write content to test file
        writeTestFile(content);

        stopwordsFile.reload(null, is);

        assertEquals(2, stopwordsFile.stopwordsItemList.size());
        // The content creates two lines: "word\n1" and "word\"
        assertTrue(stopwordsFile.stopwordsItemList.stream().anyMatch(item -> item.getInput().contains("word")));
    }

    // Test StopwordsUpdater inner class

        assertEquals(1, result.size());
        assertEquals("f", result.get(0).getOutput());
    }

    // Test reload with comments and empty lines
    public void test_reload_withCommentsAndEmptyLines() throws Exception {
        writeTestFile("# This is a comment\n\na,b => c\n\n# Another comment\nd,e => f\n");

        String result = scoreUpdater.execute();

        // Check format with class name, colon, count, and newline
        String[] lines = result.split("\n");
        assertEquals(2, lines.length);
        assertTrue(lines[0].matches("TestScoreBooster : \\d+"));
        assertTrue(lines[1].matches("TestScoreBooster : \\d+"));
    }

    // Test with null pointer exception
    public void test_execute_nullPointerException() {

                String line;
                while ((line = br.readLine()) != null) {
                    if (StringUtil.isNotBlank(line)) {
                        final Map<String, Map<String, String>> dataObj;
                        if (line.contains("\"_index\"") || line.contains("\"_type\"")) {
                            dataObj = parseObject(mapper, line);
                        } else {

    response: Response,
  ) {
  }

  /**
   * Invoked when a new event has been sent to the client.
   *
   * @param id The `id` line of the event, might be null.
   * @param type The `event` line of the event, might be null.
   * @param data The `data` line of the event.
   */
  open fun onEvent(
    eventSource: EventSource,
    id: String?,
    type: String?,
    data: String,
  ) {
  }

  /**

    }

    /**
     * Formats code content with syntax highlighting and line numbers.
     *
     * @param prefix the line number prefix pattern
     * @param style the CSS class name for styling
     * @param mimetype the MIME type of the content (currently unused)
     * @param input the code content to format
     * @return HTML formatted code with line numbers and styling
     */

import org.opensearch.monitor.process.ProcessProbe;

import jakarta.annotation.Resource;

/**
 * Executable class for generating thumbnails for indexed documents.
 * This class provides a command-line interface for thumbnail generation tasks.
 */
public class ThumbnailGenerator {

    private static final Logger logger = LogManager.getLogger(ThumbnailGenerator.class);

    /**