sendImageMessage method Null safety
Send image messages
messageUuidmessage identifier, used to track the progress of attachment upload. You can generatre identifiers usingUUID.randomUUID().imagePathpath of an image fileuserUuidslist of user IDs. If empty, all members will receive messages.
Implementation
Future<VoidResult> sendImageMessage(
  String messageUuid,
  String imagePath,
  List<String>? userUuids,
);