interface ImageStyleStorageInterface

interface ImageStyleStorageInterface {
    
    /**
     * Stores a replacement ID for an image style being deleted.
     *
     * The method stores a replacement style to be used by the configuration
     * dependency system when a image style is deleted. The replacement style is
     * replacing the deleted style in other configuration entities that are
     * depending on the image style being deleted.
     *
     * @param string $name
     *   The ID of the image style to be deleted.
     * @param string $replacement
     *   The ID of the image style used as replacement.
     */
    public function setReplacementId($name, $replacement);
    
    /**
     * Retrieves the replacement ID of a deleted image style.
     *
     * The method is retrieving the value stored by ::setReplacementId().
     *
     * @param string $name
     *   The ID of the image style to be replaced.
     *
     * @return string|null
     *   The ID of the image style used as replacement, if there's any, or NULL.
     *
     * @see \Drupal\image\ImageStyleStorageInterface::setReplacementId()
     */
    public function getReplacementId($name);
    
    /**
     * Clears a replacement ID from the storage.
     *
     * The method clears the value previously stored with ::setReplacementId().
     *
     * @param string $name
     *   The ID of the image style to be replaced.
     *
     * @see \Drupal\image\ImageStyleStorageInterface::setReplacementId()
     */
    public function clearReplacementId($name);

}