meta[$key] = $value; return $this; } public function getMeta(string | array | null $keys = null) { if (is_array($keys)) { return Arr::only($this->meta, $keys); } if (is_string($keys)) { return Arr::get($this->meta, $keys); } return $this->meta; } public function hasMeta(string | array $keys): bool { return Arr::has($this->meta, $keys); } }