WP_REST_Post_Types_Controller::prepare_item_for_response PHP Method

    public function prepare_item_for_response($post_type, $request)
    {
        $taxonomies = wp_list_filter(get_object_taxonomies($post_type->name, 'objects'), array('show_in_rest' => true));
        $taxonomies = wp_list_pluck($taxonomies, 'name');
        $base = !empty($post_type->rest_base) ? $post_type->rest_base : $post_type->name;
        $data = array('capabilities' => $post_type->cap, 'description' => $post_type->description, 'hierarchical' => $post_type->hierarchical, 'labels' => $post_type->labels, 'name' => $post_type->label, 'slug' => $post_type->name, 'taxonomies' => array_values($taxonomies), 'rest_base' => $base);
        $context = !empty($request['context']) ? $request['context'] : 'view';
        $data = $this->add_additional_fields_to_object($data, $request);
        $data = $this->filter_response_by_context($data, $context);
        // Wrap the data in a response object.
        $response = rest_ensure_response($data);
        $response->add_links(array('collection' => array('href' => rest_url(sprintf('%s/%s', $this->namespace, $this->rest_base))), 'https://api.w.org/items' => array('href' => rest_url(sprintf('wp/v2/%s', $base)))));
        /**
         * Filters a post type returned from the API.
         *
         * Allows modification of the post type data right before it is returned.
         *
         * @since 4.7.0
         *
         * @param WP_REST_Response $response The response object.
         * @param object           $item     The original post type object.
         * @param WP_REST_Request  $request  Request used to generate the response.
         */
        return apply_filters('rest_prepare_post_type', $response, $post_type, $request);
    }

 public function test_prepare_item()
 {
     $obj = get_post_type_object('post');
     $endpoint = new WP_REST_Post_Types_Controller();
     $data = $endpoint->prepare_item_for_response($obj, new WP_REST_Request());
     $this->check_post_type_obj($obj, $data);
 }