public function buildExtra(string $name, string $id, string $type, bool $generalDiscount = false, bool $doesAddUp = false): self 	{ 		$this->name = $name; 		$this->id = $id; 		$this->type = $type; 		$this->generalDiscount = $generalDiscount; 		$this->doesAddUp = $doesAddUp;  		return $this; 	}