App\Source\RouteSystem\AdminResource::__construct PHP Method

    public function __construct($groupPath, $controller = '\\App\\Controllers\\Admin\\UniversalController', $groupName = '')
    {
        if (strpos($groupPath, '/') !== 0) {
            $groupPath = '/' . $groupPath;
        }
        if (!class_exists($controller)) {
            throw new \InvalidArgumentException("I don't find controller: " . $controller);
        }
        $this->groupPath = $groupPath;
        $this->controller = $controller;
        $a = explode('/', $groupPath);
        $this->groupName = $groupName ? $groupName : substr(array_pop($a), 0, -1);
    }