code: def _rabbitmq_parameters(self):
          
          kwargs = dict(self._rabbitmq_config)
          kwargs['credentials'] =  pika.PlainCredentials(kwargs['username'],
                                                         kwargs['password'])
          for key in ['username', 'password']:
              del kwargs[key]
          return pika.ConnectionParameters(**kwargs)
docs: Return a pika ConnectionParameters object using the configuration
          from the configuration service. The configuration dictionary should
          match the parameters for pika.connection.ConnectionParameters and
          include an extra username and password variable.
  
          :rtype: pika.ConnectionParameters