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_sensor_analysis.m
    path of file: ./repos/fieldtrip/test
    
    the code of the file until where you have to start completion: function test_tutorial_sensor_analysis(datadir)

% MEM 2gb

    
function test_tutorial_sensor_analysis(datadir)

% MEM 2gb
% WALLTIME 00:25:00
% DEPENDENCY ft_redefinetrial ft_freqanalysis ft_timelockanalysis ft_appenddata ft_prepare_neighbours ft_megplanar ft_combineplanar ft_multiplotER ft_multiplotTFR ft_connectivityanalysis
% DATA public

if nargin==0
  datadir = dccnpath('/home/common/matlab/fieldtrip/data/ftp/tutorial/sensor_analysis');
end