code: public function register()
      {
          $this->mergeConfigFrom(__DIR__.'/../config/markdown.php', 'markdown');
  
          $this->registerMarkdownEnvironment();
          $this->registerMarkdownParser();
          $this->registerMarkdownHtmlRenderer();
          $this->registerMarkdown();
          $this->registerEngines();
      }
docs: Register the service provider.
  
  @return void