public function getArray()
    {
        $address = $two = [];

        $two[] = $this->post_code ?: '';
        $two[] = $this->city      ?: '';
        $two[] = $this->state     ? '('. $this->state .')' : '';

        $address[] = $this->street       ?: '';
        $address[] = $this->street_extra ?: '';
        $address[] = implode(' ', array_filter($two));
        $address[] = $this->country_name ?: '';

        if (count($address = array_filter($address)) > 0)
            return $address;

        return null;
    }