amnah\yii2\user\models\User::can PHP Method

    public function can($permissionName, $params = [], $allowCaching = true)
    {
        // check for auth manager rbac
        // copied from \yii\web\User
        $auth = Yii::$app->getAuthManager();
        if ($auth) {
            if ($allowCaching && empty($params) && isset($this->permissionCache[$permissionName])) {
                return $this->permissionCache[$permissionName];
            }
            $access = $auth->checkAccess($this->getId(), $permissionName, $params);
            if ($allowCaching && empty($params)) {
                $this->permissionCache[$permissionName] = $access;
            }
            return $access;
        }
        // otherwise use our own custom permission (via the role table)
        return $this->role->checkPermission($permissionName);
    }