deleteInRoom method
Deletes an attachment message from a room.
Same semantics as ChatMessagesApi.delete — sender or admin
only, tombstones the message, emits MessageDeletedEvent. The
underlying attachment bytes on the storage backend are reclaimed
asynchronously by a background job, not synchronously by this
call.
Implementation
@override
Future<ChatResult<void>> deleteInRoom(
String roomId,
String messageId,
) async => const ChatSuccess(null);