markUnread property
Set to "all" to mark the channel unread for any new message, "mention" to mark unread for new mentions only. Defaults to "all".
Please note: This property should have been non-nullable! Since the specification file does not include a default value (using the "default:" property), however, the generated source code must fall back to having a nullable type. Consider adding a "default:" property in the specification file to hide this note.
Implementation
String? markUnread;