### Question:
PrepareBlockchain { public File loadContractFile(ContractVersion version) { File contractFile = new File(String.format("%s/%s.jar", contractPath, version)); if (!(contractFile.exists() && contractFile.canRead())) { log.error("Contract {} is not exists", version); return null; } return contractFile; } PrepareBlockchain(String contractPath); File loadContractFile(ContractVersion version); boolean verifyContractFile(File contractFile, ContractVersion contractVersion);  }### Answer:
@Test @Ignore public void loadContractFile() { PrepareBlockchain pb = new PrepareBlockchain(new DefaultConfig().getContractPath()); ContractVersion version = ContractVersion.of("74df17611373672371cb3872e8a5d4a2e8733fb1"); File f = pb.loadContractFile(version); boolean verify = pb.verifyContractFile(f, version); assert verify == true; }