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: insertcodearoundGUI.m
    path of file: ./repos/erplab/GUIs
    
    the code of the file until where you have to start completion: function varargout = insertcodearoundGUI(varargin)
%b8d3721ed219e65100184c6b95db209bb8d3721ed219e65100184c6b95db209b
%
% ERPLAB Toolbox
% Copyright © 2007 The Regents of the University of California
    
function edit_newcode_Callback(hObject, eventdata, handles)

% -------------------------------------------------------------------------
function edit_newcode_CreateFcn(hObject, eventdata, handles)

if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
        set(hObject,'BackgroundColor','white');
end

% -------------------------------------------------------------------------
function edit_latency_Callback(hObject, eventdata, handles)

% -------------------------------------------------------------------------
function edit_latency_CreateFcn(hObject, eventdata, handles)

if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
        set(hObject,'BackgroundColor','white');
end

% -------------------------------------------------------------------------
function pushbutton_cancel_Callback(hObject, eventdata, handles)

handles.output = [];
% Update handles structure
guidata(hObject, handles);
uiresume(handles.gui_chassis);

% -------------------------------------------------------------------------
function pushbutton_RUN_Callback(hObject, eventdata, handles)

mastercodex = char(get(handles.edit_master, 'String'));
mastercodex = regexprep(mastercodex,'''|"','');
mastercell  = regexp(mastercodex,'(\S+)', 'tokens');

if isempty(mastercell)
        mastercode = str2num(mastercodex);
        if isempty(mastercode)
                mastercode = mastercodex;
        end