You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: SmoothingRectangleVademecum.m
    path of file: ./repos/Swan/Topology Optimization/Homogenization/Sources/VadamecumCalculator
    
    the code of the file until where you have to start completion: classdef SmoothingRectangleVademecum < handle
    
    properties (Access = private)
        outPutPath
        smoothVad
        nonSmoothVad
        difDB
        
        firstVademecum
        secondVademecum
    end
    
   
    
function postprocessDifVademecum(obj)
            fV = obj.firstVademecum;
            sV = obj.secondVademecum;
            folderPath = fullfile(obj.outPutPath,['DifferenceFrom',fV,'to',sV],'/');
            mkdir(folderPath);
            d.fileName   = 'ReactangleDifference';
            d.outPutPath = folderPath;
            d.smoothVD   = obj.smoothVad.vademecumData;
            d.smoothVD.feasibleIndex = obj.smoothVad.getFeasibleIndex();            
            d.nonSmoothVD = obj.nonSmoothVad.vademecumData;
            d.nonSmoothVD.feasibleIndex = obj.nonSmoothVad.getFeasibleIndex();                                    
            vc = VademecumDifferenceComputerAndPlotter(d);
            vc.compute();
        end