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: check.m
    path of file: ./repos/malini/Codes/deconvolution - model/spm8/@meeg
    
    the code of the file until where you have to start completion: function [ok, this] = check(this, option)
% Method that performs integrity checks of the meeg object

    
function [ok, this] = check(this, option)
% Method that performs integrity checks of the meeg object
% and its readiness for particular purposes.
% FORMAT  this = check(this, option)
% IN
% option - 'basic' (default) - just check the essential fields
%          'sensfid' - also checks sensor and fiducial definitions
% OUT
% ok - 1 - OK, 0- failed
% _______________________________________________________________________
% Copyright (C) 2008 Wellcome Trust Centre for Neuroimaging

% Vladimir Litvak
% $Id: check.m 3196 2009-06-11 12:54:47Z vladimir $

if nargin == 1
    option = 'basic';
end