WPLib::_load_modules PHP Method

    private static function _load_modules()
    {
        ksort(self::$_modules);
        self::$_modules = apply_filters('wplib_modules', self::$_modules);
        $called_class = get_called_class();
        $module_classes = isset(self::$_module_classes[$called_class]) ? self::$_module_classes[$called_class] : array();
        $module_names = isset(self::$_module_names[$called_class]) ? self::$_module_names[$called_class] : array();
        $abspath_regex = '#^' . preg_quote(ABSPATH) . '(.+' . preg_quote(DIRECTORY_SEPARATOR) . '.+\\.php)$#';
        foreach (self::$_modules as $priority) {
            foreach ($priority as $module_name => $filepath) {
                if (isset(self::$_loaded_include_files[$filepath])) {
                    /*
                     * Already loaded
                     */
                    continue;
                }
                if (self::is_development() && !$filepath || !WPLib::is_found($filepath)) {
                    self::trigger_error(sprintf(__("File for Module %s not found: %s", 'wplib'), $module_name, $filepath), E_USER_ERROR);
                }
                if (!$filepath) {
                    continue;
                }
                /**
                 * Set self::$_file_loading so 'shutdown' hook can report which file caused the load error.
                 */
                self::$_file_loading = $filepath;
                require_once $filepath;
                self::$_file_loading = false;
                $classes = get_declared_classes();
                $module_path = preg_replace($abspath_regex, '~/$1', $filepath);
                $module_classes[$module_class = end($classes)] = self::maybe_make_abspath_relative($module_path);
                if ($module_name = self::get_module_name($module_class)) {
                    $module_names[$module_name] = $module_class;
                }
                $register_templates = array($module_class, '_register_templates');
                if (is_callable($register_templates)) {
                    call_user_func($register_templates);
                }
                /**
                 * Find all autoloading files defined by the above module.
                 */
                static::_find_autoload_files();
            }
        }
        self::$_module_classes[$called_class] = $module_classes;
        self::$_module_names[$called_class] = $module_names;
        self::$_modules = array();
    }