SimpleSAML_Metadata_SAMLParser::addExtensions PHP Method

    private function addExtensions(array &$metadata, array $roleDescriptor)
    {
        assert('array_key_exists("scope", $roleDescriptor)');
        assert('array_key_exists("tags", $roleDescriptor)');
        $scopes = array_merge($this->scopes, array_diff($roleDescriptor['scope'], $this->scopes));
        if (!empty($scopes)) {
            $metadata['scope'] = $scopes;
        }
        $tags = array_merge($this->tags, array_diff($roleDescriptor['tags'], $this->tags));
        if (!empty($tags)) {
            $metadata['tags'] = $tags;
        }
        if (!empty($this->registrationInfo)) {
            $metadata['RegistrationInfo'] = $this->registrationInfo;
        }
        if (!empty($this->entityAttributes)) {
            $metadata['EntityAttributes'] = $this->entityAttributes;
            // check for entity categories
            if (SimpleSAML\Utils\Config\Metadata::isHiddenFromDiscovery($metadata)) {
                $metadata['hide.from.discovery'] = true;
            }
        }
        if (!empty($roleDescriptor['UIInfo'])) {
            $metadata['UIInfo'] = $roleDescriptor['UIInfo'];
        }
        if (!empty($roleDescriptor['DiscoHints'])) {
            $metadata['DiscoHints'] = $roleDescriptor['DiscoHints'];
        }
    }