private static org.ucam.srcf.assassins.plugins.vanilla.proto.Kill convertKill(Kill stateChange) {
   return org.ucam.srcf.assassins.plugins.vanilla.proto.Kill.newBuilder()
       .setKiller(PlayerConverter.convertStorageToProto(stateChange.getKiller()))
       .setVictim(PlayerConverter.convertStorageToProto(stateChange.getVictim()))
       .build();
 }