interface BundleEntityStorageInterface

interface BundleEntityStorageInterface {
    
    /**
     * Retrieves the bundle name for a provided class name.
     *
     * @param string $class_name
     *   The class name to check.
     *
     * @return string|null
     *   The bundle name of the class provided or NULL if unable to determine the
     *   bundle from the provided class.
     *
     * @throws \Drupal\Core\Entity\Exception\AmbiguousBundleClassException
     *   Thrown when multiple bundles are using the provided class.
     */
    public function getBundleFromClass(string $class_name) : ?string;

}