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: SONVersion.m
    path of file: ./repos/PsPM/src/Import/SON
    
    the code of the file until where you have to start completion: function ver=SONVersion(varargin)
% SONVERSION returns/displays the version number of the matlab SON library

    
function ver=SONVersion(varargin)
% SONVERSION returns/displays the version number of the matlab SON library
% 
% VER=SONVERSION
%       returns and displays the version while
% VER=SONVERSION('nodisplay')
%       suppresses the display
%
% Updated 06/05 ML
% © King’s College London 2002-2005

title='MATLAB SON Library';
ver=1.1;
if nargin==0 || strcmpi(varargin{1},'nodisplay')~=1
st=sprintf('Author:Malcolm Lidierth\nmalcolm.lidierth@kcl.ac.uk\n Copyright %c King%cs College London 2002-2005\n Version:%3.2f 20.06.05\n\nSON Filing system \nCopyright %c Cambridge Electronic Design 1988-2004 Version 7.0',169,39,ver,169);
(msgbox( st,title,'modal'));
end