anchor.diff:    final List<Scrubber> _scrubbers;
     HttpRequester _requester;
   
  -  // Note: since the isolates are doing mostly IO work, it makes sense to have more isolate than cores
  +  /**
  +   * You need to specify the [dsn] for your project in Sentry.
  +   *
  +   * If there is a set of common tags that should be applied to ALL your events (both exceptions and non-exceptions)
  +   * then you should provide them via the optional parameter [tags].
  +   * If [tags] include keys that are overlapped by event specific tags provided in the [captureException] and [captureMessage]
  +   * methods then both tags are sent in the event.
  +   *
  +   * Additionally, you can specify the max level of concurrent requests to Sentry per available processor on the current system.
  +   * Since sending HTTP requests is not CPU intensive work, so the default [lvlOfConcurrencyPerCore] is set to 3 which shouldn't
  +   * ever stop you from being able to do other useful work on the CPUs but should you need to you can dial that up and down to
  +   * suit your needs.
  +   *
  +   * Similarly, failed HTTP requests that make sense to retry (e.g. temporary network issue, etc.) are retried up to a maximum
  +   * of 3 times, but you can change that number by setting the [maxRetries] optional parameter. A minimum wait of 100ms is used
  +   * between retries, with the delay increasing exponentially as the number of retries increases.
  +   *
  +   */
     RavenClient(String dsn,
                 { Map<String, String> tags,
                   List<Scrubber> scrubbers,
  
positive.code:     _requester.sendMessage(sentryMsg);
    }
  
    void close() => _requester.close();
  }
negative.code:     _requester.sendMessage(sentryMsg);
    }
  
    /**
     * Captures an arbitrary message as an event in Sentry.
     *
     * ## Arguments
     * [message]    - the message to be recorded.
     * [logger]     - the name of the logger, defaults to 'root'.
     * [logLevel]   - the severity level of this exception, defaults to [LogLevel.INFO].
     * [tags]       - a map of custom tags to be logged along with the message.
     * [extra]      - a map of additional metadata to store with the event.
     *
     * ## Example
     *
     *      import 'package:raven_dart/raven_dart.dart';
     *
     *      main() {
     *        var dsn    = 'https://b70a31b3510c4cf793964a185cfe1fd0:b7d80b520139450f903720eb7991bf3d@example.com/1';
     *        var client = new RavenClient(dsn);
     *        client.captureMessage("test");
     *      }
     *
     */
    void captureMessage(String message,
                        { String logger : _defaultLogger,
                          LogLevel logLevel : LogLevel.INFO,
  