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: all_leafs.m
    path of file: ./repos/malini/Codes/deconvolution - model/spm8/matlabbatch/@cfg_repeat
    
    the code of the file until where you have to start completion: function ok = all_leafs(item)

% function ok = all_leafs(item)
% Return true, if all child items in item.val{:} consist of subtrees
% ending in leaf nodes. Leaf nodes do not have to be set at this time and
% no checks on their contents will be performed.
% This function is identical for all in-tree items. 
%
% This code is part of a batch job configuration system for MATLAB. See
%      help matlabbatch
% for a general overview.
%_______________________________________________________________________
% Copyright (C) 2007 Freibur
    
function is identical for all in-tree items. 
%
% 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: all_leafs.m 1716 2008-05-23 08:18:45Z volkmar $

rev = '$Rev: 1716 $'; %#ok

% Check whether the required number of val fields is present. This is
% done in all_set_item for in-tree nodes.
ok = all_set_item(item);
if ok
    for k = 1:numel(item.cfg_item.val)
        ok = ok && all_leafs(item.cfg_item.val{k});
        if ~ok
            break;
        end