App\Providers\DocumentServiceProvider::register PHP 메소드

    public function register()
    {
        $app = $this->app;
        // set reply code length config to Document model
        Document::setReplyCharLen($app['config']['xe.documentReplyCodeLen']);
        $app->singleton('xe.document.config', function ($app) {
            return new ConfigHandler($app['xe.config']);
        });
        $app->singleton('xe.document.instance', function ($app) {
            $instanceManagerClass = $app['xe.interception']->proxy(InstanceManager::class, 'DocumentInstanceManager');
            return new $instanceManagerClass($app['xe.db']->connection('document'), $app['xe.document.config']);
        });
        $app->singleton(['xe.document' => DocumentHandler::class], function ($app) {
            $documentHandlerClass = $app['xe.interception']->proxy(DocumentHandler::class, 'Document');
            $document = new $documentHandlerClass($app['xe.db']->connection('document'), $app['xe.document.config'], $app['xe.document.instance'], $app['request']);
            return $document;
        });
    }