Event raised by plugins to trigger a custom notification on a pull request.
Note that the
data provided by the event should be as lightweight as possible
because it is persisted as JSON data in the database for any recipient configured to receive batched
notifications. For example, use IDs (such as the IDs of the repository and pull request for a pull request)
rather than the full object (such as a pull request instance).
||the source of the event
||the ID of the renderer for this notification; this must correspond to
||the pull request for this notification
||the recipients for this notification
||the metadata that will be used to render this notification