wrong_open_close_example.rb

class Notification
  def initialze(kind, body)
    @kind, @body = kind, body
  end
  
  def send_sms_notification
    # sends a sms notification
  end
  
  def send_email_notification
    # sends a email with the notification
  end
  
  def send_push_notification
    # sends a push notification
  end
  
  def self.send_notification notifications_to_send
    notifications_to_send.each do |notification|
      case notification.kind
        when :sms
          notification.send_sms_notification
        when :email
          notification.send_email_notification
        when :push
          notification.send_push_notification
      end
    end
  end
  
  # ...
end