WooCommerce: Add a Third Description @ Single Product Page

/**
 * @snippet       Third Description @ Single Product
 * @how-to        businessbloomer.com/woocommerce-customization
 * @author        Rodolfo Melogli, Business Bloomer
 * @compatible    WooCommerce 7
 * @community     https://businessbloomer.com/club/
 */

add_action( 'add_meta_boxes', 'bbloomer_new_meta_box_single_prod' );

function bbloomer_new_meta_box_single_prod() {
	add_meta_box(
		'custom_product_meta_box',
		'Product third description',
		'bbloomer_add_custom_content_meta_box',
		'product',
		'normal',
		'default'
	);
}

function bbloomer_add_custom_content_meta_box( $post ){
	$third_desc = get_post_meta( $post->ID, '_third_desc', true ) ? get_post_meta( $post->ID, '_third_desc', true ) : '';	
	wp_editor( $third_desc, '_third_desc' );
}

add_action( 'save_post_product', 'bbloomer_save_custom_content_meta_box', 10, 1 );

function bbloomer_save_custom_content_meta_box( $post_id ) {
	if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) return;
	if ( ! isset( $_POST['_third_desc'] ) ) return;
	update_post_meta( $post_id, '_third_desc', $_POST['_third_desc'] );
}

add_action( 'woocommerce_after_single_product_summary' , 'bbloomer_third_desc_bottom_single_product', 99 );
  
function bbloomer_third_desc_bottom_single_product() {
	global $product;
	$third_desc = get_post_meta( $product->get_id(), '_third_desc', true ) ? get_post_meta( $product->get_id(), '_third_desc', true ) : '';
	if ( ! $third_desc ) return;
	echo '<div>';
	echo $third_desc;
	echo '</div>';
}