Can we preserve white (columns of ccm sum to 1) point using this repo?

[SohaibImranBhatti]

This might not be an issue but a feature request. I want to know that in openCV mcc module one can calculate the color correction matrix without any constrained optimization. The matrix calculated in this way does not have column or row sum to 1 condition and as a result the white point is not preserved. I want to know how can we make the algorithm work in a way that the columns of the resultant color correction matrix sum to 1 for white point consistency.
Just as in Imatest there is an option of row or column summing to 1 for preservation of white point.