apply_filters( 'wp_update_term_parent', int $parent_term, int $term_id, string $taxonomy, array $parsed_args, array $args )

3294	 * @param int    $parent_term ID of the parent term.3295	 * @param int    $term_id     Term ID.3296	 * @param string $taxonomy    Taxonomy slug.3297	 * @param array  $parsed_args An array of potentially altered update arguments for the given term.3298	 * @param array  $args        Arguments passed to wp_update_term().3299	 */3300	$parent = (int) apply_filters( 'wp_update_term_parent', $args['parent'], $term_id, $taxonomy, $parsed_args, $args );3301 3302	// Check for duplicate slug.3303	$duplicate = get_term_by( 'slug', $slug, $taxonomy );3304	if ( $duplicate && $duplicate->term_id !== $term_id ) {3305		/*3306		 * If an empty slug was passed or the parent changed, reset the slug to something unique.