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: size.m
    path of file: ./repos/spm/@meeg
    
    the code of the file until where you have to start completion: function res = size(this, dim)
% returns the dimensions of the data matrix
% FORMAT res = size(this, dim))
%__________________________________________________________________________

% Vladimir Litvak
% Copyright (C) 2008-2022 Wellcome Centre for Human Neuroimaging


if ~strncmpi(transformtype(this), 'TF', 2)

    
function res = size(this, dim)
% returns the dimensions of the data matrix
% FORMAT res = size(this, dim))
%__________________________________________________________________________

% Vladimir Litvak
% Copyright (C) 2008-2022 Wellcome Centre for Human Neuroimaging


if ~strncmpi(transformtype(this), 'TF', 2)
    res = [nchannels(this), nsamples(this), ntrials(this)];
else
    res = [nchannels(this), nfrequencies(this), nsamples(this), ntrials(this)];
end