missing files in silverflash

I can’t find these files in silverflash package:
import io.fixprotocol.silverflash.examples.messages.AcceptedDecoder;
import io.fixprotocol.silverflash.examples.messages.CrossType;
import io.fixprotocol.silverflash.examples.messages.CustomerType;
import io.fixprotocol.silverflash.examples.messages.Display;
import io.fixprotocol.silverflash.examples.messages.EnterOrderEncoder;
import io.fixprotocol.silverflash.examples.messages.IntermarketSweepEligibility;
import io.fixprotocol.silverflash.examples.messages.OrderCapacity;
import io.fixprotocol.silverflash.examples.messages.Side;

git remote show origin

Those message encoders/decoders in module perftest are generated by the build process. To build all modules, execute command mvn install from the root directory of the project. As stated in the README, Maven is required to build the project.