void onFiatPaymentStarted(ResultHandler resultHandler, ErrorMessageHandler errorMessageHandler) {
checkNotNull(trade, "trade must not be null");
checkArgument(trade instanceof BuyerTrade, "Check failed: trade instanceof BuyerTrade");
checkArgument(
trade.getDisputeState() == Trade.DisputeState.NONE,
"Check failed: trade.getDisputeState() == Trade.DisputeState.NONE");
((BuyerTrade) trade).onFiatPaymentStarted(resultHandler, errorMessageHandler);
}
void onFiatPaymentReceived() {
checkNotNull(trade, "trade must not be null");
if (trade instanceof SellerTrade && trade.getDisputeState() == Trade.DisputeState.NONE)
((SellerTrade) trade).onFiatPaymentReceived();
}