How to correctly recognize a new record type in the VP plugin, through OOP and connect the template?

Question

WordPress

I create a method:

public static function loader()
{

  add_action( 'init', self::create_post() );
  add_action( 'init', self::create_tax() );
  add_filter( 'rwmb_meta_boxes', self::add_metabox());
  add_filter( 'template_include', self::template('order'), 1 );
  add_filter( 'template_include', self::template('cart'), 1 );

}

And the template connection method:

public static function template($page){
  if ( is_page() == $page ) {
    $template_path = plugin_dir_path( __FILE__ ) . 'templates/'.$page.'.php';
  }

  return $template_path;
}

Zero reactions. I've already tried all the options ... What's wrong?