private boolean hasChangedConfig(
      final QbftConfigOptions currentConfig, final QbftConfigOptions nextConfig) {
    return !currentConfig
        .getValidatorContractAddress()
        .equals(nextConfig.getValidatorContractAddress());
  }
Log transition change.

@param parentHeader the parent header
consensus/qbft/src/main/java/org/hyperledger/besu/consensus/qbft/validator/ValidatorModeTransitionLogger.java