Best way to include parent theme styles when the child theme is already properly enqueued

parent-theme-style.php

<?php
/**
 * Hook our function. We are using priority 100 to make sure it fires AFTER
 * the theme stylesheet is registered/enqueued.
 * 
 * @link https://developer.wordpress.org/reference/hooks/wp_enqueue_scripts/
 *       Description of `wp_enqueue_scripts` hook
 */
add_action( 'wp_enqueue_scripts', 'slimline_enqueue_template_stylesheet', 100 );

/**
 * Edit stylesheet version and dependencies to automatically output parent styles.
 *
 * This allows us to always take advantage of the latest parent theme updates without
 * resorting to `@import` rules.
 *
 * Note that this function assumes that the parent theme uses `style.css` for its theme
 * styles. If your parent theme uses a different file or files you will have to modify
 * accordingly.
 */
function slimline_enqueue_template_stylesheet() {

	/**
	 * @global WP_Styles $wp_styles The core styles object
	 * @link   https://developer.wordpress.org/reference/classes/wp_styles/
	 *         Description of `WP_Styles` class
	 */
	global $wp_styles;

	/**
	 * Register template stylesheet
	 * 
	 * We are getting the version of the parent theme so the parent stylesheet
	 * version number will automatically update when we update the theme.
	 * 
	 * @link https://developer.wordpress.org/reference/functions/wp_register_style/
	 *       Description of `wp_register_style` function
	 * @link https://developer.wordpress.org/reference/functions/trailingslashit/
	 *       Description of `trailingslashit` function
	 * @link https://developer.wordpress.org/reference/functions/get_template_directory_uri/
	 *       Description of `get_template_directory_uri` function
	 * @link https://developer.wordpress.org/reference/functions/wp_get_theme/
	 *       Description of `wp_get_theme` function
	 * @link https://developer.wordpress.org/reference/functions/get_template/
	 *       Description of `get_template` function
	 * @link https://developer.wordpress.org/reference/classes/wp_theme/
	 *       Description of `WP_Theme` class
	 */
	wp_register_style( 'theme-parent', trailingslashit( get_template_directory_uri() ) . 'style.css', false, wp_get_theme( get_template() )->get( 'Version' ), 'all' );

	/**
	 * Add template styles as dependency for child theme stylesheet.
	 * 
	 * This makes sure the parent theme stylesheet will print before the child
	 * theme stylesheet.
	 */
	$wp_styles->registered[get_current_theme()]->deps = array( 'theme-parent' );

}