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_job.m
    path of file: ./repos/spm/matlabbatch/@cfg_repeat
    
    the code of the file until where you have to start completion: function item = subsasgn_job(item, subs, val)


    
function item = subsasgn_job(item, subs, val)

% function varargout = subsasgn_job(item, subs)
% Treat a subscript reference as a reference in a job structure instead
% of a cfg_item structure. If subs is empty, then the subtree
% beginning at item will be initialised with val. Otherwise, subs(1)
% should have a subscript type of '()' or '{}', depend