Replace computeIfAbsent with bigFunction in Java Code

To replace the 'computeIfAbsent' method with 'bigFunction' in the code snippet, you can modify it as follows:

empCodeKeyAndLineValueMap.computeIfAbsent(empCode, k -> {
    List<Integer> lineValues = new ArrayList<>();
    bigFunction(k, lineValues);
    return lineValues;
});

In this case, 'bigFunction' is a method that takes two parameters: the 'empCode' and a 'List' to store the line values. The 'bigFunction' is responsible for populating the line values list based on the 'empCode'.