def zero
      last_event = stack.events.first
      @last_processed_event_id = last_event.id unless last_event.nil?
      nil
    rescue Aws::CloudFormation::Errors::ValidationError
    end
def zero
      last_event = stack.events.first
      @last_processed_event_id = last_event.id unless last_event.nil?
      nil
    rescue Aws::CloudFormation::Errors::ValidationError
    end
Consume all new events