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.m
    path of file: ./repos/bspm/thirdparty/spm8/@meeg
    
    the code of the file until where you have to start completion: function this = subsasgn(this,subs,dat)
% Overloaded subsasgn function for meeg objects.

    
function this = subsasgn(this,subs,dat)
% Overloaded subsasgn function for meeg objects.
% _________________________________________________________________________________
% Copyright (C) 2008 Wellcome Trust Centre for Neuroimaging

% Vladimir Litvak
% $Id: subsasgn.m 2716 2009-02-09 17:14:15Z vladimir $

if isempty(subs)
    return;
end