> */ private $metadata; /** * Registered_Client constructor. * * @param string $client_id The registered client ID. * @param string $registration_access_token The registration access token. * @param string $registration_client_uri The management endpoint URL. * @param array> $metadata Additional metadata from the registration response. * * @throws InvalidArgumentException If client_id is empty. */ public function __construct( string $client_id, // phpcs:ignore PHPCompatibility.Attributes.NewAttributes.PHPNativeAttributeFound -- No-op on PHP < 8.2; redacts parameter from stack traces on PHP 8.2+. #[SensitiveParameter] string $registration_access_token, string $registration_client_uri, array $metadata = [] ) { if ( $client_id === '' ) { throw new InvalidArgumentException( 'Registered_Client requires a non-empty client_id.' ); } $this->client_id = $client_id; $this->registration_access_token = $registration_access_token; $this->registration_client_uri = $registration_client_uri; $this->metadata = $metadata; } /** * Returns the registered client ID. * * @return string */ public function get_client_id(): string { return $this->client_id; } /** * Returns the registration access token. * * @return string */ public function get_registration_access_token(): string { return $this->registration_access_token; } /** * Returns the management endpoint URL. * * @return string */ public function get_registration_client_uri(): string { return $this->registration_client_uri; } /** * Returns additional metadata from the registration response. * * @return array> */ public function get_metadata(): array { return $this->metadata; } /** * Converts the DTO to an associative array for storage. * * @return array> */ public function to_array(): array { return [ 'client_id' => $this->client_id, 'registration_access_token' => $this->registration_access_token, 'registration_client_uri' => $this->registration_client_uri, 'metadata' => $this->metadata, ]; } }