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: spm_XYZreg_Ex2.m
    path of file: ./repos/spm
    
    the code of the file until where you have to start completion: function varargout=spm_XYZreg_Ex2(varargin)
% Example of Registry enabled XYZ GUI control / function
% FORMAT...
%_____________________________________________________________
    
function has multiple places where you can change the XYZ,
% you could use an ``internal'' registry locally, with the external registry
% as one of it's entries! (I think?)
%
%_______________________________________________________________________

% Andrew Holmes
% Copyright (C) 1997-2022 Wellcome Centre for Human Neuroimaging


%=======================================================================
switch lower(varargin{1}), case 'create'
%=======================================================================
% hMe = spm_XYZreg_Ex2('Create',M,D,xyz)
if nargin<4, xyz=[0;0;0]; else, xyz=varargin{4}; end