public function handle(BaseCommand $command)
 {
     $sender = $command->sender;
     $address = $command->address;
     $label = $command->label;
     $tradekey = $command->tradekey;
     /** @var Currency $currency */
     $currency = $command->sender->currency;
     if ($address) {
         $currency->client->sendfrom((string) $sender->id, $command->address, $command->amount);
     } elseif ($label) {
         $recipient = Recipient::where(['label' => $label, 'currency_id' => $currency->id])->first();
         $currency->client->sendfrom((string) $sender->id, $recipient->recipient, $command->amount);
     } elseif ($tradekey) {
         $trade = Wallet::where('tradekey', '=', $tradekey)->first();
         $currency->client->move((string) $sender->id, (string) $trade->id, $command->amount);
     }
 }