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: cat_conf_opts1445.m
    path of file: ./repos/ExploreASL/External/SPMmodified/toolbox/cat12/cat_run1445
    
    the code of the file until where you have to start completion: function opts = cat_conf_opts1445(expert)
% Configuration file for CAT SPM options
%
% Christian Gaser
% $Id: cat_conf_opts1445.m 1557 2020-01-29 09:34:03Z dahnke $
%#ok<*AGROW>

    
function opts = cat_conf_opts1445(expert)
% Configuration file for CAT SPM options
%
% Christian Gaser
% $Id: cat_conf_opts1445.m 1557 2020-01-29 09:34:03Z dahnke $
%#ok<*AGROW>

if ~exist('expert','var')
  expert = 0; % switch to de/activate further GUI options
end