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: canlab_toolbox_setup.m
    path of file: ./repos/CanlabCore/CanlabCore
    
    the code of the file until where you have to start completion: function canlab_toolbox_setup
% canlab_toolbox_setup
% ------------------------------------------------------------------------
% This function is run with no input arguments. It checks for a number of
% CANlab repositories, and gives you the option to download them from
% Github, add them to the Matlab path with subfolders, and save the Matlab
% path. Run it from the directory ABOVE your individual repositories. e.g.,

    
function canlab_toolbox_setup
% canlab_toolbox_setup
% ------------------------------------------------------------------------
% This function is run with no input arguments. It checks for a number of
% CANlab repositories, and gives you the option to download them from
% Github, add them to the Matlab path with subfolders, and save the Matlab
% path. Run it from the directory ABOVE your individual repositories. e.g.,
% if you have a local directory for your Github repositories, run it from
% there. This function assumes you have all CANlab repositories in the same master
% folder.
%
% The following repositories are included. This is a subset of the
% repositories available, but contains must of the publicly useful ones:
% ------------------------------------------------------------------------
% CANlab core tools - Object-oriented interactive analysis and tools used in other functions
% CANlab help examples - Example scripts and html output, second-level analysis batch scripts
% MKDA meta-analysis toolbox - Coordinate-based meta-analysis of neuroimaging data
% FMRI_simulations - Misc tools for simulating and testing power and image data
% Private masks and signatures - Selected models shared on request
% M3 Mediation toolbox - Single- and Multi-level mediation tools
% Neuroimaging_Pattern_Masks - meta-analysis masks, signatures, parcellations
% Robust regression toolbox - Voxel-wise robust regression for neuroimaging data
% CanlabPrivate - Private repository for lab members and collaborators
%
% July 2018, Tor Wager

main_repository_dir = pwd;

% If you drag and drop the script in, Matlab changes to the folder with the script automatically,
% then changes back.  If so, assume main dir is 2 levels above this.
% If you have it on your path and run it by typing the script name only, it
% will not change directories.  
[dd, ff] = fileparts(main_repository_dir);
if strcmp(ff, 'CanlabCore') && exist(fullfile(pwd, 'canlab_toolbox_setup.m'), 'file')
    % We are in CanlabCore subdirectory
    
    main_repository_dir = fileparts(fileparts(main_repository_dir));
end