private function __construct() {

		if ( ! defined( 'LLMS_REST_API_VERSION' ) ) {
			define( 'LLMS_REST_API_VERSION', $this->version );
		}

		/**
		 * When loaded as a library included by the LifterLMS core localization is handled by the LifterLMS core.
		 *
		 * When the plugin is loaded by itself as a plugin, we must localize it independently.
		 */
		if ( ! defined( 'LLMS_REST_API_LIB' ) || ! LLMS_REST_API_LIB ) {
			add_action( 'init', array( $this, 'load_textdomain' ), 0 );
		}

		// Authentication needs to run early to handle basic auth.
		include_once LLMS_REST_API_PLUGIN_DIR . 'includes/class-llms-rest-authentication.php';

		// Load everything else.
		add_action( 'plugins_loaded', array( $this, 'init' ), 10 );

	}