code: private function checkConfig(): void
      {
          if (empty($this->device)) {
              Log::warning('Config "message.smsgatewayme.device" is not defined.');
          }
  
          if (empty($this->token)) {
              Log::warning('Config "message.smsgatewayme.token" is not defined.');
          }
      }
docs: Check default config for easy debuggin.
  
  @return void