anchor.diff:     */
     Future<Reply> filterDelete(String eventHeader, String valueToFilter,
             {int timeoutSeconds: 10}) =>
  -      this._subscribeAndSendCommand('filter delete $eventHeader $valueToFilter',
  +      _subscribeAndSendCommand('filter delete $eventHeader $valueToFilter',
             new Duration(seconds: timeoutSeconds));
   
     /**
      * Send an event into the event system (multi line input for headers)
      */
     Future<Reply> sendevent(String eventName, {int timeoutSeconds: 10}) =>
  -      this._subscribeAndSendCommand(
  +      _subscribeAndSendCommand(
             'sendevent $eventName', new Duration(seconds: timeoutSeconds));
   
     /**
  
positive.code:           '${EventFormat.supportedFormats.join(', ')}'));
      }
  
      return this._subscribeAndSendCommand('event ${format} ${events.join(' ')}',
          new Duration(seconds: timeoutSeconds));
    }
  
  
negative.code:   Future _sendSerializedCommand(
        String command, Completer completer, Duration timeout) {
      /// Write the command to socket.
      log.finest('Sending "${command}"');
  
      try {
        _socket.writeln('${command}\n');
      } catch (error, stackTrace) {
        log.shout('Failed to send command "${command}"', error, stackTrace);
        _shutdown();
        return new Future.error(new StateError('Failed to write to socket.'));
      }
  
  