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: savemybestGUI.m
    path of file: ./repos/erplab/GUIs
    
    the code of the file until where you have to start completion: %
% Author: Aaron Matthew Simmons & Steven Luck
% Center for Mind and Brain
% University of California, Davis,
% Davis, CA
% 2009

%b8d372
    
function edit_bestname_Callback(hObject, eventdata, handles)

% -------------------------------------------------------------------------
function edit_bestname_CreateFcn(hObject, eventdata, handles)
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
        set(hObject,'BackgroundColor','white');
end

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

% -------------------------------------------------------------------------
function edit_saveas_CreateFcn(hObject, eventdata, handles)
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
        set(hObject,'BackgroundColor','white');
end

% -------------------------------------------------------------------------
function pushbutton_browse_Callback(hObject, eventdata, handles)
%
% Save OUTPUT file
%
fndefault = get(handles.edit_saveas,'String');
[fname, pathname] = uiputfile({'*.best', 'BEST-files (*.best)';},'Save Output file as',...
                               fndefault);

if isequal(fname,0)
        disp('User selected Cancel')
        guidata(hObject, handles);
        handles.owfp = 0;  % over write file permission
        guidata(hObject, handles);
else
        set(handles.edit_saveas,'String', fullfile(pathname, fname));
        disp(['To save BESTset, user selected ', fullfile(pathname, fname)])
        handles.owfp = 1;  % over write file permission
        guidata(hObject, handles);
end