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: failed_fieldtrip2fiff.m
    path of file: ./repos/fieldtrip/test/invalid
    
    the code of the file until where you have to start completion: function failed_fieldtrip2fiff

% MEM 8gb
% WALLTIME 00:10:00
% DEPENDENCY fieldtrip2fiff ft_read_header ft_read_data ft_read_event

% use file location on Donders server
dataset_ctf      = dccnpath('/home/common/matlab/fieldtrip/data/ftp/test/ctf/SubjectBraille.ds');
sensfile         = dccnpath('/home/common/matlab/fieldtrip/template/electrode/GSN-HydroCel-257.sfp');
dataset_neuromag = dccnpath('/home/common/matlab/fieldtrip/data/test/bug2036/sample_audvis_raw.fif');
dataset_eeg      = dccnpath('/home/common/matlab/fieldtrip/data/test/bug2036/svui_0003_eeg_go-sd_010.raw');
datadir          = tempname;
mkdir(datadir);
  
%-------------------------------------%
%-CTF: write raw
cfg = [];
cfg.dataset = dataset_ctf;
cfg.trialdef.triallength = Inf;
cfg = ft_definetrial(cfg);

cfg.continuous = 'yes';
cfg.channel = 'MEG';
data = ft_preprocessing(cfg);

fifffile  = [datadir filesep 'ctf_raw.fif'];
eventfile = [datadir filesep 'ctf_raw-eve.fif'];
fieldtrip2fiff(fifffile, data)

%-----------------%
%-read back in
cfg = [];
cfg.dataset = fifffile;
data1 = ft_preprocessing(cfg);

events = mne_read_events(eventfile); % this is simply a binary file with three columns
%-----------------%
%-------------------------------------%

%-------------------------------------%
%-CTF: write epoched
cfg = [];
cfg.dataset             = dataset_ctf;   % name of CTF dataset
cfg.trialdef.eventtype  = 'backpanel trigger';
cfg.trialdef.eventvalue = 4;
cfg.trialdef.prestim    = 0.4;
cfg.trialdef.poststim   = 0.6;

cfg = ft_definetrial(cfg);

cfg.channel   = 'MEG';
%  data = ft_preprocessing(cfg); ERROR: not implemented

% fifffile = [datadir filesep 'ctf_epch.fif'];  % not clean yet, it writes evoked
% fieldtrip2fiff(fifffile, data)

%-----------------%
%-read back in
% cfg = [];
% cfg.dataset = fifffile;
% data1 = ft_preprocessing(cfg);
% ft_datatype(data1)
%-----------------%
%-------------------------------------%

%-------------------------------------%
%-CTF: write time-locked
cfg = [];
avg = ft_timelockanalysis(cfg, data);

fifffile = [datadir filesep 'ctf_avg.fif'];
fieldtrip2fiff(fifffile, avg)

%-----------------%
%-read back in
cfg = [];
cfg.dataset = fifffile;
data1 = ft_preprocessing(cfg);
avg1 = ft_timelockanalysis([], data1);
ft_datatype(avg1)  % returns 'timelock'
%-----------------%
%-------------------------------------%

%-------------------------------------%
%-NEUROMAG: write raw
cfg = [];
cfg.dataset = dataset_neuromag;
cfg.trialdef.triallength = Inf;
cfg = ft_definetrial(cfg);

cfg.channel   = {'MEG', 'EEG', '-MEG 2443'  '-EEG 053'};
data = ft_preprocessing(cfg);

fifffile = [datadir filesep 'neuromag_raw.fif'];
eventfile = [datadir filesep 'neuromag_raw-eve.fif'];
fieldtrip2fiff(fifffile, data)

%-----------------%
%-read back in
cfg = [];
cfg.dataset = fifffile;
data1 = ft_preprocessing(cfg);

events = mne_read_events(eventfile); % this is simply a binary file with three columns
%-----------------%
%-------------------------------------%

%-------------------------------------%
%-NEUROMAG: write epoched
cfg = [];
cfg.dataset                 = dataset_neuromag;
cfg.trialdef.eventtype      = 'STI 014';
cfg.trialdef.prestim        = 1;
cfg.trialdef.poststim       = 2;
cfg.trialdef.eventvalue     = 1;
cfg = ft_definetrial(cfg);

cfg.channel   = {'MEG', 'EEG', '-MEG 2443'  '-EEG 053'};
data = ft_preprocessing(cfg);

fifffile = [datadir filesep 'neuromag_epch.fif'];
%  fieldtrip2fiff(fifffile, data) ERROR: not implemented

%-----------------%
%-read back in
% cfg = [];
% cfg.dataset = fifffile;
% data1 = ft_preprocessing(cfg);
% ft_datatype(data1)
%-----------------%
%-------------------------------------%

%-------------------------------------%
%-NEUROMAG: write time-locked
cfg = [];
avg = ft_timelockanalysis(cfg, data);

fifffile = [datadir filesep 'neuromag_avg.fif'];
fieldtrip2fiff(fifffile, avg)

%-----------------%
%-read back in
cfg = [];
cfg.dataset = fifffile;

    
function failed_fieldtrip2fiff

% MEM 8gb
% WALLTIME 00:10:00
% DEPENDENCY fieldtrip2fiff ft_read_header ft_read_data ft_read_event

% use file location on Donders server
dataset_ctf      = dccnpath('/home/common/matlab/fieldtrip/data/ftp/test/ctf/SubjectBraille.ds');
sensfile         = dccnpath('/home/common/matlab/fieldtrip/template/electrode/GSN-HydroCel-257.sfp');
dataset_neuromag = dccnpath('/home/common/matlab/fieldtrip/data/test/bug2036/sample_audvis_raw.fif');
dataset_eeg      = dccnpath('/home/common/matlab/fieldtrip/data/test/bug2036/svui_0003_eeg_go-sd_010.raw');
datadir          = tempname;
mkdir(datadir);
  
%-------------------------------------%
%-CTF: write raw
cfg = [];
cfg.dataset = dataset_ctf;
cfg.trialdef.triallength = Inf;
cfg = ft_definetrial(cfg);

cfg.continuous = 'yes';
cfg.channel = 'MEG';
data = ft_preprocessing(cfg);

fifffile  = [datadir filesep 'ctf_raw.fif'];
eventfile = [datadir filesep 'ctf_raw-eve.fif'];
fieldtrip2fiff(fifffile, data)

%-----------------%
%-read back in
cfg = [];
cfg.dataset = fifffile;
data1 = ft_preprocessing(cfg);

events = mne_read_events(eventfile); % this is simply a binary file with three columns
%-----------------%
%-------------------------------------%

%-------------------------------------%
%-CTF: write epoched
cfg = [];
cfg.dataset             = dataset_ctf;   % name of CTF dataset
cfg.trialdef.eventtype  = 'backpanel trigger';
cfg.trialdef.eventvalue = 4;
cfg.trialdef.prestim    = 0.4;
cfg.trialdef.poststim   = 0.6;

cfg = ft_definetrial(cfg);

cfg.channel   = 'MEG';
%  data = ft_preprocessing(cfg); ERROR: not implemented

% fifffile = [datadir filesep 'ctf_epch.fif'];  % not clean yet, it writes evoked
% fieldtrip2fiff(fifffile, data)

%-----------------%
%-read back in
% cfg = [];
% cfg.dataset = fifffile;
% data1 = ft_preprocessing(cfg);
% ft_datatype(data1)
%-----------------%
%-------------------------------------%

%-------------------------------------%
%-CTF: write time-locked
cfg = [];
avg = ft_timelockanalysis(cfg, data);

fifffile = [datadir filesep 'ctf_avg.fif'];
fieldtrip2fiff(fifffile, avg)

%-----------------%
%-read back in
cfg = [];
cfg.dataset = fifffile;
data1 = ft_preprocessing(cfg);
avg1 = ft_timelockanalysis([], data1);
ft_datatype(avg1)  % returns 'timelock'
%-----------------%
%-------------------------------------%

%-------------------------------------%
%-NEUROMAG: write raw
cfg = [];
cfg.dataset = dataset_neuromag;
cfg.trialdef.triallength = Inf;
cfg = ft_definetrial(cfg);

cfg.channel   = {'MEG', 'EEG', '-MEG 2443'  '-EEG 053'};
data = ft_preprocessing(cfg);

fifffile = [datadir filesep 'neuromag_raw.fif'];
eventfile = [datadir filesep 'neuromag_raw-eve.fif'];
fieldtrip2fiff(fifffile, data)

%-----------------%
%-read back in
cfg = [];
cfg.dataset = fifffile;
data1 = ft_preprocessing(cfg);

events = mne_read_events(eventfile); % this is simply a binary file with three columns
%-----------------%
%-------------------------------------%

%-------------------------------------%
%-NEUROMAG: write epoched
cfg = [];
cfg.dataset                 = dataset_neuromag;
cfg.trialdef.eventtype      = 'STI 014';
cfg.trialdef.prestim        = 1;
cfg.trialdef.poststim       = 2;
cfg.trialdef.eventvalue     = 1;
cfg = ft_definetrial(cfg);

cfg.channel   = {'MEG', 'EEG', '-MEG 2443'  '-EEG 053'};
data = ft_preprocessing(cfg);

fifffile = [datadir filesep 'neuromag_epch.fif'];
%  fieldtrip2fiff(fifffile, data) ERROR: not implemented

%-----------------%
%-read back in
% cfg = [];
% cfg.dataset = fifffile;
% data1 = ft_preprocessing(cfg);
% ft_datatype(data1)
%-----------------%
%-------------------------------------%

%-------------------------------------%
%-NEUROMAG: write time-locked
cfg = [];
avg = ft_timelockanalysis(cfg, data);

fifffile = [datadir filesep 'neuromag_avg.fif'];
fieldtrip2fiff(fifffile, avg)

%-----------------%
%-read back in
cfg = [];
cfg.dataset = fifffile;
data1 = ft_preprocessing(cfg);
avg1 = ft_timelockanalysis([], data1);
ft_datatype(avg1)
%-----------------%
%-------------------------------------%

%-------------------------------------%
%-EEG: write raw
cfg = [];
cfg.dataset = dataset_eeg;
cfg.trialdef.triallength = Inf;
cfg = ft_definetrial(cfg);

cfg.channel   = {'EEG'};
data = ft_preprocessing(cfg);
data.elec = ft_read_sens(sensfile);
data.elec.label{end