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: subsasgn_check.m
    path of file: ./repos/ExploreASL/External/SPMmodified/matlabbatch/@cfg_branch
    
    the code of the file until where you have to start completion: function [sts, val] = subsasgn_check(item,subs,val)

% function [sts, val] = subsasgn_check(item,subs,val)
% Check whether type of val conforms to configuration tree specification.
%
% 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: subsasgn_check.m 2512 2008-12-01 13:21:29Z volkmar $

rev = '$Rev: 2512 $'; %#ok

sts = true;


    
function [sts, val] = subsasgn_check(item,subs,val)

% function [sts, val] = subsasgn_check(item,subs,val)
% Check whether type of val conforms to configuration tree specification.
%
% 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: subsasgn_check.m 2512 2008-12-01 13:21:29Z volkmar $

rev = '$Rev: 2512 $'; %#ok

sts = true;

% check, whether arguments for 'val' are cfg_items
switch subs(1).subs
    case {'val'}
        sts = ~cfg_get_defaults('cfg_item.checkval') || subsasgn_check_valcfg(subs,val,[0 Inf]);
end