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: spm_bms_against_null.m
    path of file: ./repos/bspm/thirdparty/spm12
    
    the code of the file until where you have to start completion: function spm_bms_against_null(logbf_file)
% Plot PPM showing evidence against null
% FORMAT spm_bms_against_null(logbf_file)
%
% logbf_file  -  Log Bayes Factor file providing evidence against null
%
% Call this function when SPM is already running
% or set SPM to appropriate modality eg. spm('defaults','FMRI');
%__________________________________________________________________________
% Copyright (C) 2014 Wellcome Trust Centre for Neuroimaging

% Will Penny
% $Id: spm_bms_against_null.m 6038 2014-06-04 15:22:42Z will $

    
function spm_bms_against_null(logbf_file)
% Plot PPM showing evidence against null
% FORMAT spm_bms_against_null(logbf_file)
%
% logbf_file  -  Log Bayes Factor file providing evidence against null
%
% Call this function when SPM is already running
% or set SPM to appropriate modality eg. spm('defaults','FMRI');
%__________________________________________________________________________
% Copyright (C) 2014 Wellcome Trust Centre for Neuroimaging

% Will Penny
% $Id: spm_bms_against_null.m 6038 2014-06-04 15:22:42Z will $

if nargin < 1 || isempty(logbf_file)
    logbf_file = spm_select(1,'image',...
        'Select Log Bayes factor image providing evidence against null');
end