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: multi_threshold.m
    path of file: ./repos/CanlabCore/CanlabCore/Visualization_functions
    
    the code of the file until where you have to start completion: function cl = multi_threshold(P,type,df,varargin)
% ::
%
%    cl = multi_threshold(P,type,df,[overlay image name])
%       This function wants a statistic image.
%       F contrast:  df = xSPM.df;
%
%       type = 'F' or 'T'or 'none'
%
% ..
%    really good function.
%    tor wager
% ..

% ..
%    defaults
%       Colors:     postive - Red Yellow Orange
%                   negative -  Blue, Light Blue, Aqua
%       Threshold:  [.001 .005 .05] uncorrected
%       K Sizes:    [5 5 10]
%   
%   example
%
%   o2 = multi_threshold(out.t, 'o2', o2, 'thresh', [.005 .01 .05], 'sizethresh', [1 1 1]);
%   o2 = montage(o2, 'coronal', 'slice_range', [-20 20], 'onerow');
%   o2 = addblobs(o2, region(out.t));
% ..

red = [1 0 0]; % Colors
yellow = [1 1 0];
orange = [.9 .5 0];
orange2 = [1 .6 .1];
orange3 = [1 .7 .3];
buff = [.7 .6 .4];
dkred = [.7 .3 .1];

blue = [0 0 1];
ltblue = [0 .5 .9];
ltblue2 = [.2 .7 1];
aqua = [0 .5 .5];
dkblue = [0 .1 .7];

    
function cl = multi_threshold(P,type,df,varargin)
% ::
%
%    cl = multi_threshold(P,type,df,[overlay image name])
%       This function wants a statistic image.
%       F contrast:  df = xSPM.df;
%
%       type = 'F' or 'T'or 'none'
%
% ..
%    really good function.
%    tor wager
% ..

% ..
%    defaults
%       Colors:     postive - Red Yellow Orange
%                   negative -  Blue, Light Blue, Aqua
%       Threshold:  [.001 .005 .05] uncorrected
%       K Sizes:    [5 5 10]
%   
%   example
%
%   o2 = multi_threshold(out.t, 'o2', o2, 'thresh', [.005 .01 .05], 'sizethresh', [1 1 1]);
%   o2 = montage(o2, 'coronal', 'slice_range', [-20 20], 'onerow');
%   o2 = addblobs(o2, region(out.t));
% ..

red = [1 0 0]; % Colors
yellow = [1 1 0];
orange = [.9 .5 0];
orange2 = [1 .6 .1];
orange3 = [1 .7 .3];
buff = [.7 .6 .4];
dkred = [.7 .3 .1];

blue = [0 0 1];
ltblue = [0 .5 .9];
ltblue2 = [.2 .7 1];
aqua = [0 .5 .5];
dkblue = [0 .1 .7];
dkblue2 = [0 .2 .5];

% low thresh colors
colors = {yellow orange3 orange2};
colors2= {blue ltblue ltblue2};

% thresholds

thr = [.001 .005 .05];   % Inf = FDR, thr should be increasing p-values
sizes = [5 5 10];     % minimum sizes
direction = 'both';  % 'pos','neg','both'

% masking

maskimg = [];       % empty, or specify image name
%which('scalped_avg152T1_graymatter_smoothed.img');
%maskimg = '/Users/tor/Desktop/Opioid_Placebo2/mean_images/avg_thresh_1-2.img';

% overlay

ovl = [];
if length(varargin) > 0, ovl = varargin{1};,end