public function getLocationString()
    {
        $normalized = '';
        if ($this->city !== null) {
            $normalized .= $this->city->name;
        }
        if ($this->region !== null) {
            $normalized .= ' ' . $this->region->name;
        }
        if ($this->postal_code !== null) {
            $normalized .= ' ' . $this->postal_code;
        }
        return $normalized;
    }