@Override
 public BigDecimal getExchangeRateLast(String cryptoCurrency, String fiatCurrency) {
   if (ICurrencies.ICG.equalsIgnoreCase(cryptoCurrency)) {
     return rate;
   }
   return null;
 }
 @Override
 public ICryptoAddressValidator createAddressValidator(String cryptoCurrency) {
   if (ICurrencies.ICG.equalsIgnoreCase(cryptoCurrency)) {
     return new IncognitocoinAddressValidator();
   }
   return null;
 }