public function pack($options) {
		$result = [];
		foreach ($options as $operation => $data) {
			$tmp = [];
			foreach ($data as $key => $value) {
				if (is_string($value) || is_numeric($value)) {
					$tmp[] = "$key|$value";
				}
			}
			$result[$operation] = implode(';', $tmp);
		}
		return $result;
	}