serialize method
Serializes information the current object
writer Serialization writer to use to serialize this model
Implementation
@override
void serialize(SerializationWriter writer) {
writer.writeIntValue('flat_amount', flatAmount);
writer.writeStringValue('flat_amount_decimal', flatAmountDecimal);
writer.writeIntValue('unit_amount', unitAmount);
writer.writeStringValue('unit_amount_decimal', unitAmountDecimal);
writer.writeIntValue('up_to', upTo);
writer.writeAdditionalData(additionalData);
}