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

% WALLTIME 00:10:00
% MEM 1gb
% DEPENDENCY hsv2rgb
% DATA no

filelist = {'hsv2rgb'};

% NOTE: hsv2rgb was part of standard matlab in older matlab versions

[ftver, ftpath] = ft_version;
restoredefaultpath

% ensure that the the 'compat' (i.e. external/signal) is used
global ft_default
ft_default.toolbox.signal = 'compat';
addpath(ftpath);
ft_defaults;

for k = 1:numel(filelist)
  assert(exist(filelist{k}, 'file')==2);

  fprintf('testing the functionality of %s\n', filelist{k});
  switch filelist{k}
    case 'hsv2rgb'
      assert(isequal(hsv2rgb([0 1 1]),[1 0 0]));
      assert(isequal(hsv2rgb([1 0 1]),[1 1 1]));
    otherwise
      ft_error('function %s is not part of the official external/images directory', filelist{k});
  end
end



    
function test_external_images

% WALLTIME 00:10:00
% MEM 1gb
% DEPENDENCY hsv2rgb
% DATA no

filelist = {'hsv2rgb'};

% NOTE: hsv2rgb was part of standard matlab in older matlab versions

[ftver, ftpath] = ft_version;
restoredefaultpath

% ensure that the the 'compat' (i.e. external/signal) is used
global ft_default
ft_default.toolbox.signal = 'compat';
addpath(ftpath);
ft_defaults;

for k = 1:numel(filelist)
  assert(exist(filelist{k}, 'file')==2);

  fprintf('testing the functionality of %s\n', filelist{k});
  switch filelist{k}
    case 'hsv2rgb'
      assert(isequal(hsv2rgb([0 1 1]),[1 0 0]));
      assert(isequal(hsv2rgb([1 0 1]),[1 1 1]));
    otherwise
      ft_error('function %s is not part of the official external/images directory', filelist{k});
  end
end


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% compare the external/images output with the matlab version
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
tmp = rand(10,10,3);
for k = 1:numel(filelist)
  try
    % this only works for the functions that create a window
    funhandle = str2func(filelist{k});
    output1.(filelist{k}) = funhandle(tmp);
  end