private void appendCombo(final RequestBuilder builder) {
if (SecurityType.COMBO.equals(contract.getSecurityType())) {
builder.append(contract.getComboLegs().size());
for (final ComboLeg comboLeg : contract.getComboLegs()) {
builder.append(comboLeg.getContractId());
builder.append(comboLeg.getRatio());
builder.append(comboLeg.getOrderAction().getAbbreviation());
builder.append(comboLeg.getExchange());
}
}
}
