/**
 * RankFusionProcessor manages multiple search engines and combines their results using rank fusion algorithms.
 * This processor supports searching with multiple searchers concurrently and merging their results based on
 * ranking scores to provide more comprehensive and accurate search results.
 *
 * The processor maintains a pool of searchers and an executor service for concurrent operations.

        assertTrue(result.isPresent());

        // Test that we can chain operations
        String processed = result.map(s -> s.toLowerCase()).orElse("default");

        assertEquals("hello world", processed);

        // Test with null value
        String nullValue = null;
        OptionalEntity<String> emptyResult = OptionalUtil.ofNullable(nullValue);

     * @param dataMap the document data to be indexed as key-value pairs
     */
    void store(DataStoreParams paramMap, Map<String, Object> dataMap);

    /**
     * Returns the total number of documents processed by this callback.
     *
     * @return the document count
     */
    long getDocumentSize();

    /**
     * Returns the total execution time for index update operations.
     *

      }
      readControlFrame()
    }
  }

  /**
   * Reads a message body into across one or more frames. Control frames that occur between
   * fragments will be processed. If the message payload is masked this will unmask as it's being
   * processed.
   */
  @Throws(IOException::class)
  private fun readMessage() {
    while (true) {
      if (closed) throw IOException("closed")

      if (frameLength > 0L) {

        QueryBuilder builder = queryCommand.convertTermRangeQuery(context, query, 1.0f);
        assertNotNull(builder);
        assertTrue(builder instanceof RangeQueryBuilder);

        // Query was processed successfully
        RangeQueryBuilder rqb = (RangeQueryBuilder) builder;
        assertEquals("title", rqb.fieldName());
    }

        buf[0] = 0x00;
        buf[1] = 0x10; // count = 4096 in little-endian (0x1000)
        int returned = resp.readParameterWordsWireFormat(buf, 0);
        assertEquals(8, returned, "Method should return 8 bytes processed");
    }

     * Represents an API response for bulk operations, containing a list of processed items.
     */
    public static class ApiBulkResponse extends ApiResponse {
        /**
         * Constructs an empty ApiBulkResponse.
         */
        public ApiBulkResponse() {
            // NOP
        }

        /**
         * The list of items processed in the bulk operation.
         */

        return sval;
    }

    /**
     * Advances to the next token.
     *
     * @return The type of the token.
     */
    public int nextToken() {
        initVal();
        if (processEOF()) {
            return ttype;
        }
        if (processWhitespace()) {
            return ttype;
        }
        if (processWord()) {
            return ttype;
        }

     *
     * @param index the name of the index to scroll through
     * @param callback the function to apply to each search hit, returning true to continue or false to stop
     * @return the number of documents processed
     */
    public static long scroll(final String index, final Function<SearchHit, Boolean> callback) {
        final SearchEngineClient client = ComponentUtil.getSearchEngineClient();

                stackTraceCount.incrementAndGet();
            }
        };

        ThreadDumpUtil.processThreadDump(countingConsumer);

        // Verify that multiple threads were processed
        assertTrue("Should process at least one thread", threadCount.get() >= 1);
        assertTrue("Should have stack trace elements", stackTraceCount.get() > 0);