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_example_cumsum1.m
    path of file: ./repos/PsPM/src/ext/matlabbatch/examples
    
    the code of the file until where you have to start completion: function cumsum = cfg_example_cumsum1
% Example script that creates an cfg_exbranch to sum two numbers. The
% inputs are entered as vector, the output is a vector containing the
% cumulative sums. This function differs from cfg_example_sum (except from

    
function cumsum = cfg_example_cumsum1
% Example script that creates an cfg_exbranch to sum two numbers. The
% inputs are entered as vector, the output is a vector containing the
% cumulative sums. This function differs from cfg_example_sum (except from
% names) only in the specification of the output subscript.
%
% 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_example_cumsum1.m 380 2016-11-08 07:47:23Z tmoser $

rev = '$Rev: 380 $'; %#ok

%% Input Item
input1         = cfg_entry; % This is the generic data entry item
input1.name    = 'Input a'; % The displayed name
input1.tag     = 'a';       % The name appearing in the harvested job structure. This name must be unique among all items in the val field of the superior node
input1.strtype = 'e';       % No restriction on what type of data is entered. This could be used to restrict input to real numbers, integers ...
input1.num     = [1 Inf];   % Number of inputs required (2D-array with exactly one row and two column)
input1.help    = {'This is the input vector.','The elements will be added together.'}; % help text displayed

%% Executable Branch
cumsum      = cfg_exbranch;       % This is the branch that has information about how to run this module
cumsum.name = 'cumsum1';             % The display name
cumsum.tag  = 'cfg_example_cumsum1'; % The name appearing in the harvested job structure. This name must be unique among all items in the val field of the superior node
cumsum.val  = {input1};    % The items that belong to this branch. All items must be filled before this branch can run or produce virtual outputs
cumsum.prog = @cfg_example_run_cumsum1;  % A function handle that will be called with the harvested job to run the computation
cumsum.vout = @cfg_example_vout_cumsum1; % A function handle that will be called with the harvested job to determine virtual outputs
cumsum.help = {'Compute the cumulative sum of two numbers.'};

%% Local Functions
% The cfg_example_vout_cumsum1 function can go here, it is not useful outside
% the batch environment.
function vout = cfg_example_vout_cumsum1(job)
% Determine what outputs will be present if this job is run. In this case,
% the structure of the inputs is fixed, and the output is always a single
% number. Note that input items may not be numbers, they can also be
% depend