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_ft_denoise_hfc.m
    path of file: ./repos/fieldtrip/test
    
    the code of the file until where you have to start completion: function test_ft_denoise_hfc(testfile)

% WALLTIME 00:10:00
% MEM 6gb
% DEPENDENCY test_ft_denoise_hfc
% DATA private

    
function test_ft_denoise_hfc(testfile)

% WALLTIME 00:10:00
% MEM 6gb
% DEPENDENCY test_ft_denoise_hfc
% DATA private

% switch nargin
%   case 0
%     locate_function = which('test_ft_denoise_hfc');
%     % load data
%     load(fullfile(locate_function,'..','..','..','project_zeus',...
%       'data_UCL_OPM.mat'));
%   case 1
%     % If user inputs a filename, use path specific for DCCN
%     % Find this data: https://doi.org/10.17605/OSF.IO/CJNXH
%     load(dccnpath('/home/common/matlab/fieldtrip/data/test/pull2123/data_UCL_OPM.mat'));
% end