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: factorization_chol_dense.m
    path of file: ./repos/SuiteSparse/MATLAB_Tools/Factorize
    
    the code of the file until where you have to start completion: classdef factorization_chol_dense < factorization
%FACTORIZATION_CHOL_DENSE A = R'*R where A is full and symmetric pos. def.
% Adds an extra method, cholupdate, which acts just like the builtin chol
    
function x = mldivide_subclass (F,b)
            %MLDIVIDE_SUBCLASS x=A\b using a dense Cholesky factorization
            % x = R \ (R' \ b)
            f = F.Factors ;
            opU.UT = true ;
            opUT.UT = true ;
            opUT.TRANSA = true ;
            y = b ;
            if (issparse (y))
                y = full (y) ;
            end