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: test_tutorial_meguk2015.m
    path of file: ./repos/fieldtrip/test
    
    the code of the file until where you have to start completion: function test_tutorial_meguk2015

% WALLTIME 01:30:00
% MEM 6gb
% DEPENDENCY ft_preprocessing ft_appenddata ft_timelockanalysis ft_componentanalysis ft_rejectcomponent ft_freqanalysis ft_math ft_sourceanalysis ft_sourceinterpolate ft_volumerealign ft_determine_coordsys ft_sourceplot ft_timelockstatistics ft_multiplotER ft_multiplotTFR ft_singleplotER ft_singleplotTFR
% DATA private

    
function test_tutorial_meguk2015

% WALLTIME 01:30:00
% MEM 6gb
% DEPENDENCY ft_preprocessing ft_appenddata ft_timelockanalysis ft_componentanalysis ft_rejectcomponent ft_freqanalysis ft_math ft_sourceanalysis ft_sourceinterpolate ft_volumerealign ft_determine_coordsys ft_sourceplot ft_timelockstatistics ft_multiplotER ft_multiplotTFR ft_singleplotER ft_singleplotTFR
% DATA private

% This script is the concatenation of the various parts of the MEG-UK 2015
% workshop demonstration. It has been editted to make it smaller and faster
% and to avoid parts with external dependencies.

datadir = dccnpath('/home/common/matlab/fieldtrip/data/test/original/rikhenson');
subj    = 15;

%% read the data from all separate runs

% this will contain the runs for a single subject
rundata = {};

for run=1 % the original uses 1:6, but that takes too long and too much storage
  trialdef = fullfile(datadir, sprintf('Sub%02d', subj), 'MEEG', 'Trials', sprintf('run_%02d_trldef.txt', run));
  dataset  = fullfile(datadir, sprintf('Sub%02d', subj), 'MEEG', sprintf('run_%02d_sss.fif', run));

  [begsample, end