Route::current PHP Method

        public static function current()
        {
            return \Illuminate\Routing\Router::current();
        }

 /**
  * Get the subdomain parameter value
  *
  * @return string|null subdomain parameter value
  */
 private function getSubDomainParameter()
 {
     if (\Route::current() && ($param = \Route::input(config('tenant.subdomain')))) {
         return $param;
     }
     return $this->extractSubdomainFromUrl();
 }