How to use

calcDifficulty

method

in

org.ethereum.config.BlockchainConfig

@Override
public BigInteger calcDifficulty(BlockHeader curBlock, BlockHeader parent) {
  return this.parent.calcDifficulty(curBlock, parent);
}

@Override
public BigInteger calcDifficulty(BlockHeader curBlock, BlockHeader parent) {
  return this.parent.calcDifficulty(curBlock, parent);
}

public BigInteger calcDifficulty(BlockchainNetConfig config, BlockHeader parent) {
  return config.getConfigForBlock(getNumber()).
      calcDifficulty(this, parent);
}