interface EntityTypeBundleInfoInterface

interface EntityTypeBundleInfoInterface {
    
    /**
     * Get the bundle info of all entity types.
     *
     * @return array
     *   An array of bundle information where the outer array is keyed by entity
     *   type. The next level is keyed by the bundle name. The inner arrays are
     *   associative arrays of bundle information, such as the label for the
     *   bundle.
     */
    public function getAllBundleInfo();
    
    /**
     * Gets the bundle info of an entity type.
     *
     * @param string $entity_type_id
     *   The entity type ID.
     *
     * @return array
     *   An array of bundle information where the outer array is keyed by the
     *   bundle name, or the entity type name if the entity does not have bundles.
     *   The inner arrays are associative arrays of bundle information, such as
     *   the label for the bundle.
     */
    public function getBundleInfo($entity_type_id);
    
    /**
     * Clears static and persistent bundles.
     */
    public function clearCachedBundles();

}