[Wordpress] Registrar taxonomía "Brand product"

<?php register_taxonomy('product_brand', array('product'), array( 'hierarchical' => true, 'update_count_callback' => '_wc_term_recount', 'label' => __('Product Brands', 'reha'), 'labels' => array( 'name' => __('Product Brands', 'reha'), 'singular_name' => __('Product Brand', 'reha'), 'menu_name' => _x('Brands', 'Admin menu name', 'reha'), 'search_items' => __('Search Product Brands', 'reha'), 'all_items' => __('All Product Brands', 'reha'), 'edit_item' => __('Edit Product Brand', 'reha'), 'update_item' => __('Update Product Brand', 'reha'), 'add_new_item' => __('Add New Product Brand', 'reha'), 'new_item_name' => __('New Product Brand Name', 'reha'), 'popular_items' => __('Popular Product Brands', 'reha'), 'separate_items_with_commas' => __('Separate Product Brands with commas', 'reha'), 'add_or_remove_items' => __('Add or remove Product Brands', 'reha'), 'choose_from_most_used' => __('Choose from the most used Product Brands', 'reha'), 'not_found' => __('No Product Brands found', 'reha'), ), 'show_ui' => true, 'query_var' => true, 'capabilities' => array( 'manage_terms' => 'manage_product_terms', 'edit_terms' => 'edit_product_terms', 'delete_terms' => 'delete_product_terms', 'assign_terms' => 'assign_product_terms', ), 'rewrite' => array( 'slug' => _x('product-brand', 'slug', 'reha'), 'with_front' => false, 'hierarchical' => true, ), ) ); ?>