public function toString($separator = ', ')
    {
        $fields = array(
            $this->Company,
            $this->getName(),
            $this->Address,
            $this->AddressLine2,
            $this->City,
            $this->State,
            $this->PostalCode,
            $this->Country
        );
        $this->extend('updateToString', $fields);
        return implode($separator, array_filter($fields));
    }