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.m
    path of file: ./repos/ExploreASL/External/SPMmodified
    
    the code of the file until where you have to start completion: function varargout=spm(varargin)
% SPM: Statistical Parametric Mapping (startup function)
%_______________________________________________________
    
function start banner, for version FnV of function Fn, & datestamps
% FORMAT SPMid = spm('SFnBanner',Fn,FnV)
% Prints a sub-function start banner
% FORMAT SPMid = spm('SSFnBanner',Fn,FnV)
% Prints a sub-sub-function start banner
% Fn    - Function name (string)
% FnV   - Function version (string)
% SPMid - ID string: [SPMver: Fn (FnV)] 
%
% FORMAT SPMdir = spm('Dir',Mfile)
% Returns the directory containing the version of spm in use,
% identified as the first in MATLABPATH containing the Mfile spm (this
% file) (or Mfile if specified).
%
% FORMAT [v,r] = spm('Ver',Mfile,ReDo)
% Returns the current version (v) and release (r) of file Mfile. This 
% corresponds to the Last changed Revision number extracted from the 
% Subversion Id tag.
% If Mfile is absent or empty then it returns the current SPM version (v)
% and release (r), extracted from the file Contents.m in the SPM directory
% (these information are cached in a persistent variable to enable repeat
% use without recomputation).
% If Redo [default false] is true, then the cached current SPM information
% are not used but recomputed (and recached).
%
% FORMAT ver = spm('Version')
% Returns a string containing SPM version and release numbers.
%
% FORMAT xTB = spm('TBs')
% Identifies installed SPM toolboxes: SPM toolboxes are defined as the
% contents of sub-directories of fullfile(spm('Dir'),'toolbox') - the
% SPM toolbox installation directory. For SPM to pick a toolbox up,
% there must be a single mfile in the directory whose name end