wp_set_unique_slug_on_create_template_part() WordPress Function

function wp_set_unique_slug_on_create_template_part( $post_id ) {
	$post = get_post( $post_id );
	if ( 'auto-draft' !== $post->post_status ) {
		return;
	}

	if ( ! $post->post_name ) {
		wp_update_post(
			array(
				'ID'        => $post_id,
				'post_name' => 'custom_slug_' . uniqid(),
			)
		);
	}

	$terms = get_the_terms( $post_id, 'wp_theme' );
	if ( ! is_array( $terms ) || ! count( $terms ) ) {
		wp_set_post_terms( $post_id, wp_get_theme()->get_stylesheet(), 'wp_theme' );
	}
}
Uses	Description
wp-includes/category-template.php:get_the_terms()	Retrieves the terms of the taxonomy that are attached to the post.
wp-includes/theme.php:wp_get_theme()	Gets a WP_Theme object for a theme.
wp-includes/class-wp-theme.php:WP_Theme::get_stylesheet()	Returns the directory name of the theme’s “stylesheet” files, inside the theme root.
wp-includes/post.php:wp_set_post_terms()	Set the terms for a post.
wp-includes/post.php:wp_update_post()	Update a post with new post data.
wp-includes/post.php:get_post()	Retrieves post data given a post ID or post object.