public static function resolve_plugininfo_class($type) {
        $plugintypes = core_component::get_plugin_types();
        if (!isset($plugintypes[$type])) {
            return '\core\plugininfo\orphaned';
        }

        $parent = core_component::get_subtype_parent($type);

        if ($parent) {
            $class = '\\'.$parent.'\plugininfo\\' . $type;
            if (class_exists($class)) {
                $plugintypeclass = $class;
            } else {
                if ($dir = core_component::get_component_directory($parent)) {
                    // BC only - use namespace instead!
                    if (file_exists("$dir/adminlib.php")) {
                        global $CFG;
                        include_once("$dir/adminlib.php");
                    }
                    if (class_exists('plugininfo_' . $type)) {
                        $plugintypeclass = 'plugininfo_' . $type;
                        debugging('Class "'.$plugintypeclass.'" is deprecated, migrate to "'.$class.'"', DEBUG_DEVELOPER);
                    } else {
                        debugging('Subplugin type "'.$type.'" should define class "'.$class.'"', DEBUG_DEVELOPER);
                        $plugintypeclass = '\core\plugininfo\general';
                    }
                } else {
                    $plugintypeclass = '\core\plugininfo\general';
                }
            }
        } else {
            $class = '\core\plugininfo\\' . $type;
            if (class_exists($class)) {
                $plugintypeclass = $class;
            } else {
                debugging('All standard types including "'.$type.'" should have plugininfo class!', DEBUG_DEVELOPER);
                $plugintypeclass = '\core\plugininfo\general';
            }
        }

        if (!in_array('core\plugininfo\base', class_parents($plugintypeclass))) {
            throw new coding_exception('Class ' . $plugintypeclass . ' must extend \core\plugininfo\base');
        }

        return $plugintypeclass;
    }