PHP error when using Class Breadcrumb in preprocess function

API page: https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Core%21Breadcrum...

Enter a descriptive title (above) relating to class Breadcrumb, then describe the problem you have found:

I try to render breadcrumb in page.html.twig.

in my custom_theme.theme file i have:

use \Drupal\Core\Breadcrumb\Breadcrumb;

function custom_theme_preprocess_page(&$variables) {
  $variables['breadcrumb'] = Breadcrumb::toRenderable();
}

and I have a php Error:
“Fatal error: Using $this when not in object context in /home/sebcolor/testd8/core/lib/Drupal/Core/Breadcrumb/Breadcrumb.php on line 30”