}

    @Test
    @DisplayName("Test statistics toString")
    void testStatisticsToString() throws Exception {
        circuitBreaker.call(() -> "success");

        SimpleCircuitBreaker.Statistics stats = circuitBreaker.getStatistics();
        String str = stats.toString();

        assertNotNull(str);

/**
 * Helper class for managing crawler statistics and performance metrics.
 * This class provides functionality to track, record, and report statistics
 * about crawler operations including timing data, performance metrics, and
 * operational events. It uses an internal cache to maintain statistics
 * objects and provides methods to begin tracking, record events, and
 * finalize statistics collection.
 *
 */

        public JvmGcObj[] gc;
        /** JVM thread statistics */
        public JvmThreadsObj threads;
        /** JVM class loading statistics */
        public JvmClassesObj classes;
        /** JVM uptime in milliseconds */
        public long uptime;
    }

    /**
     * Data transfer object representing JVM memory statistics.
     */
    public static class JvmMemoryObj {
        /**

            statistics.recordWriteError();
            throw e;
        }
    }

    /**
     * Gets the RDMA buffer manager for memory operations.
     *
     * @return buffer manager instance
     */
    public RdmaBufferManager getBufferManager() {
        return bufferManager;
    }

    /**
     * Gets RDMA statistics.
     *
     * @return statistics instance
     */

        this.statistics = statistics;
        this.maxRetries = maxRetries;
        this.retryDelayMs = retryDelayMs;
    }

    /**
     * Create error handler with default settings
     *
     * @param statistics statistics tracker
     */
    public RdmaErrorHandler(RdmaStatistics statistics) {

            log.warn("Circuit breaker {} manually tripped", name);
        }
    }

    /**
     * Get circuit breaker statistics
     *
     * @return statistics
     */
    public Statistics getStatistics() {
        return new Statistics(name, getState(), totalCalls.get(), totalSuccesses.get(), totalFailures.get(), rejectedCalls.get(),
                consecutiveFailures.get(), getSuccessRate());

      }
    } else {
      sumOfProductsOfDeltas = NaN;
    }
    yStats.add(y);
  }

  /**
   * Adds the given statistics to the dataset, as if the individual values used to compute the
   * statistics had been added directly.
   */
  public void addAll(PairedStats values) {
    if (values.count() == 0) {
      return;
    }

    xStats.addAll(values.xStats());

  /** Returns the approximate number of entries in this cache. */
  long size();

  /**
   * Returns a current snapshot of this cache's cumulative statistics, or a set of default values if
   * the cache is not recording statistics. All statistics begin at zero and never decrease over the
   * lifetime of the cache.
   *
   * <p><b>Warning:</b> this cache may not be recording statistical data. For example, a cache

  }

  /** Returns the number of pairs in the dataset. */
  public long count() {
    return xStats.count();
  }

  /** Returns the statistics on the {@code x} values alone. */
  public Stats xStats() {
    return xStats;
  }

  /** Returns the statistics on the {@code y} values alone. */
  public Stats yStats() {
    return yStats;
  }

  /**

    /** The suggest helper for managing suggest functionality. */
    @Resource
    protected SuggestHelper suggestHelper;

    /**
     * Retrieves suggest statistics including word counts.
     *
     * @return JSON response containing suggest statistics
     */
    // GET /api/admin/suggest
    @Execute
    public JsonResponse<ApiResult> get$index() {
        final SuggestBody body = new SuggestBody();