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: arPLECalc.m
    path of file: ./repos/d2d/arFramework3/Development
    
    the code of the file until where you have to start completion: % arPLECalc([jk, n])
% profile likelilhood calculation
%
% jk:               parameter index or indices          [all fit parame
    
function varargout = arPLECalc(varargin)

global ar

if(nargin==0)
    qglobalar = true;
    jk = find(ar.qFit==1);
    n = 50;
else
    if(isstruct(varargin{1}))
        qglobalar = false;
        ar = varargin{1};
        if(nargin==1)
            jk = find(ar.qFit==1);
            n = 50;
        elseif(nargin==2)
            jk = varargin{2};
            n = 50;
        elseif(nargin==3)
            jk = varargin{2};
            n = varargin{3};
        end