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

% MEM 1gb
% WALLTIME 00:10:00
% DEPENDENCY
% DATA private

% this script tests the functionality of ft_singleplotTFR with respect to the 
% different input datatypes. no other functionality is tested.
% the script has been written in order to test a clean up of the code

    
function test_old_ft_singleplotTFR

% MEM 1gb
% WALLTIME 00:10:00
% DEPENDENCY
% DATA private

% this script tests the functionality of ft_singleplotTFR with respect to the 
% different input datatypes. no other functionality is tested.
% the script has been written in order to test a clean up of the code

filename = dccnpath('/home/common/matlab/fieldtrip/data/test/latest/raw/eeg/preproc_neuroscan16.mat');
load(filename)

%there's an unresolved issue with duplicate labels 'FREE'
%FIXME
data.label{1} = 'FREE1';
data.label{2} = 'FREE2';
data.label{3} = 'FREE3';
data.label{4} = 'FREE4';

% create frequency-data
cfgf = [];
cfgf.method = 'mtmconvol';
cfgf.taper  = 'hanning';
cfgf.output = 'pow';
cfgf.channel = data.label(5:end