//
public FeedAttachmentSticker(ActivityAttachment attachment, ulong actionId)
{
_sticker = Stickers.GetById(attachment.id);
attachment_id = attachment.id;
attachment_type = "sitereaction_sticker";
title = _sticker.title;
uri = $"https://beta.koobeca.com/view.php?action_id={actionId}";
image_main = _sticker.file_id > 0 ? new FeedImage(_sticker.file_id) : null;
mode = (uint)(attachment.mode ? 1 : 0);
}