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: IBEA.m
    path of file: ./repos/PlatEMO/PlatEMO/Algorithms/Multi-objective optimization/IBEA
    
    the code of the file until where you have to start completion: classdef IBEA < ALGORITHM
% <multi/many> <real/integer/label/binary/permutation>
% Indicator-based evolutionary algor
    
function main(Algorithm,Problem)
            %% Parameter setting
            kappa = Algorithm.ParameterSet(0.05);

            %% Generate random population
            Population = Problem.Initialization();

            %% Optimization
            while Algorithm.NotTerminated(Population)
                MatingPool = TournamentSelection(2,Problem.N,-CalFitness(Population.objs,kappa));
                Offspring  = OperatorGA(Problem,Population(MatingPool));
                Population = EnvironmentalSelection([Population,Offspring],Problem.N,kappa);
            end