Whether the related content menu is showing.
List of related content sources.
Add the given listener for the given event type(s).
The type of the event.
The callback which is executed when the event occurs.
Remove the given listener for the given event type(s).
The type of the event.
The callback which will be removed.
The related content UI API which can be used to toggle UI components.
Remarks
- Available since v2.14.2.