do_action( 'after_switch_theme', string $old_name, WP_Theme $old_theme )

3510			 *3511			 * @since 3.3.03512			 *3513			 * @param string   $old_name  Old theme name.3514			 * @param WP_Theme $old_theme WP_Theme instance of the old theme.3515			 */3516			do_action( 'after_switch_theme', $old_theme->get( 'Name' ), $old_theme );3517		} else {3518			/** This action is documented in wp-includes/theme.php */3519			do_action( 'after_switch_theme', $stylesheet, $old_theme );3520		}3521 3522		flush_rewrite_rules();