anchor.diff:                                      Specified as an array as defined in the
                                       https://api.slack.com/docs/attachments[
                                      Slack attachments documentation].
  -
  +--
   
   [float]
   [[jira-notification-settings]]
  
positive.code:   Default fields values for the issue created in Jira. See
    {xpack-ref}/actions-jira.html#jira-action-attributes[Jira Action Attributes] for more information.
    Optional.
  
  
  [float]
  [[pagerduty-notification-settings]]
  
negative.code:   `img:embedded`;;
    Only embedded images. Embedded images can only use the
                      `cid:` URL protocol in their `src` attribute.
  --
  
  `xpack.notification.email.html.sanitization.disallow`::
  Specifies the HTML elements that are NOT allowed in email notifications.
  