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: compareAll.m
    path of file: ./repos/SuiteSparse/Mongoose/MATLAB/comparison
    
    the code of the file until where you have to start completion: function comparisonData = compareAll(trials)
% comparisonData = compareAll(trials)
%
% Mongoose Graph Partitioning Library, Copyright (C) 2017-2018,
% Scott P. Kolodziej, Nuri S. Yeralan, Timothy A. Davis, William W. Hager

    
function comparisonData = compareAll(trials)
% comparisonData = compareAll(trials)
%
% Mongoose Graph Partitioning Library, Copyright (C) 2017-2018,
% Scott P. Kolodziej, Nuri S. Yeralan, Timothy A. Davis, William W. Hager
% Mongoose is licensed under Version 3 of the GNU General Public License.
% Mongoose is also available under other licenses; contact authors for details.
% SPDX-License-Identifier: GPL-3.0-only

    if (nargin < 1 || trials < 1)
        trials = 5;
    end