class Telbe::AddStickerToSetDescriptor

user_id Integer Yes User identifier of sticker set owner name String Yes Sticker set name png_sticker InputFile or String Yes Png image with the sticker, must be up to 512 kilobytes in size, dimensions must not exceed 512px, and either width or height must be exactly 512px. Pass a file_id as a String to send a file that already exists on the Telegram servers, pass an HTTP URL as a String for Telegram to get a file from the Internet, or upload a new one using multipart/form-data. More info on Sending Files ยป emojis String Yes One or more emoji corresponding to the sticker mask_position MaskPosition Optional A JSON-serialized object for position where the mask should be placed on faces