private function __construct() {

		/**
		 * Localize as early as possible.
		 *
		 * Since 4.6 the "just_in_time" l10n will load the default (not custom) file first
		 * so we must localize before any l10n functions (like `__()`) are used
		 * so that our custom "safe" location will always load first.
		 */
		$this->localize();

		$this->define_constants();

		$this->init_assets();

		$this->query = new LLMS_Query();

		// Hooks.
		register_activation_hook( __FILE__, array( 'LLMS_Install', 'install' ) );
		add_filter( 'plugin_action_links_' . plugin_basename( __FILE__ ), array( $this, 'add_action_links' ), 10, 1 );

		add_action( 'init', array( $this, 'init' ), 0 );
		add_action( 'init', array( $this, 'integrations' ), 1 );
		add_action( 'init', array( $this, 'processors' ), 5 );
		add_action( 'init', array( $this, 'events' ), 5 );
		add_action( 'init', array( $this, 'init_session' ), 6 ); // After table installation which happens at init 5.
		add_action( 'init', array( $this, 'payment_gateways' ) );
		add_action( 'init', array( $this, 'include_template_functions' ) );

		add_action( 'admin_init', array( 'LLMS_Site', 'check_status' ) );

		// Tracking.
		if ( defined( 'DOING_CRON' ) && DOING_CRON && 'yes' === get_option( 'llms_allow_tracking', 'no' ) ) {
			LLMS_Tracker::init();
		}

		/**
		 * Action fired after LifterLMS is fully loaded.
		 *
		 * @since Unknown
		 */
		do_action( 'lifterlms_loaded' );

	}