context.openConversation(operation, participant).getRoot();
ConversationBlip blip = conversation.getBlip(blipId);
supplement.markAsRead(blip);
}
} else if (modifyHow.equals(ModifyHowType.MARK_AS_UNREAD.getValue())) {
supplement.markAsUnread();
} else {
throw new UnsupportedOperationException("Unsupported folder action: " + modifyHow);
}
// Construct empty response.
Map<ParamsProperty, Object> data = Maps.newHashMap();