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_check_installation.m
    path of file: ./repos/ExploreASL/External/SPMmodified
    
    the code of the file until where you have to start completion: function varargout = spm_check_installation(action)
% Check SPM installation
% FORMAT spm_check_installation('basic')
% Perform a superficial check of SPM installation [default].
%
% FORMAT s
    
function check_basic

%-Platform: MATLAB, GNU Octave
%--------------------------------------------------------------------------
if exist('OCTAVE_VERSION','builtin')
    platform = 'Octave';
else
    platform = 'MATLAB';
end

%-Minimal MATLAB version required
%--------------------------------------------------------------------------
minVer = '7.4';
try
    v = spm_check_version('matlab',minVer);
catch
    error('A problem occurred with spm_check_version.m.');
end