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: cfg_get_defaults.m
    path of file: ./repos/malini/Codes/deconvolution - model/spm8/matlabbatch
    
    the code of the file until where you have to start completion: function varargout = cfg_get_defaults(defstr, varargin)

% function varargout = cfg_get_defaults(defspec, varargin)
% Get/set defaults for various properties of matlabbatch utilities.
% The values can be modified permanently by editing the file
% private/cfg_mlbatch_defaults.m 
% or for the current MATLAB session by calling
% cfg_get_defaults(defspec, defval).
%
% This code is part of a batch job configuration system for MATLAB. See 

    
function varargout = cfg_get_defaults(defstr, varargin)

% function varargout = cfg_get_defaults(defspec, varargin)
% Get/set defaults for various properties of matlabbatch utilities.
% The values can be modified permanently by editing the file
% private/cfg_mlbatch_defaults.m 
% or for the current MATLAB session by calling
% cfg_get_defaults(defspec, defval).
%
% This code is part of a batch job configuration system for MATLAB. See 
%      help matlabbatch
% for a general overview.
%_______________________________________________________________________
% Copyright (C) 2007 Freiburg Brain Imaging

% Volkmar Glauche
% $Id: cfg_get_defaults.m 1862 2008-06-30 14:12:49Z volkmar $

rev = '$Rev: 1862 $'; %#ok

persistent local_def;
if isempty(local_def)
   local_def = cfg_mlbatch_defaults;
end