public function getValue(): ?Range
	{
		if (!empty($this->value)) {
			$result = new Range;
			@list($from, $to) = explode($this->delimiter, $this->value);

			if ($from && $to) {
				$result->from = DateTime::createFromFormat($this->format, $from);
				$result->to = DateTime::createFromFormat($this->format, $to);
				return $result;
			}
		}
		return null;
	}