protected function printLicenses(CompletePackageInterface $package)
    {
        $spdxLicense = new SpdxLicense;

        $licenses = $package->getLicense();

        foreach ($licenses as $licenseId) {
            $license = $spdxLicense->getLicenseByIdentifier($licenseId); // keys: 0 fullname, 1 osi, 2 url

            if (!$license) {
                $out = $licenseId;
            } else {
                // is license OSI approved?
                if ($license[1] === true) {
                    $out = sprintf('%s (%s) (OSI approved) %s', $license[0], $licenseId, $license[2]);
                } else {
                    $out = sprintf('%s (%s) %s', $license[0], $licenseId, $license[2]);
                }
            }

            $this->getIO()->write('<info>license</info>  : ' . $out);
        }
    }