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_srender.m
    path of file: ./repos/spm/toolbox/SRender
    
    the code of the file until where you have to start completion: function spm_srender(job)
% A function for rendering surfaces
% FORMAT spm_srender(job)
% job - a job structure (see tbx_cfg_render.m)

    
function spm_srender(job)
% A function for rendering surfaces
% FORMAT spm_srender(job)
% job - a job structure (see tbx_cfg_render.m)
%__________________________________________________________________________

% John Ashburner
% Copyright (C) 2008-2022 Wellcome Centre for Human Neuroimaging


fg  = spm_figure('GetWin','Graphics');
ren = get(fg,'Rend