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: pop_syncroartifacts.m
    path of file: ./repos/erplab/pop_functions
    
    the code of the file until where you have to start completion: function [EEG, com]= pop_syncroartifacts(EEG, varargin)
%POP_SYNCROARTIFACTS
% PURPOSE  :	Synchonizes artifact dtection information between EEGLAB and ERPLAB
%                 (EEG.reject, EEG.epoch.eventflag, EEG.EVENTLIST.eventinfo.flag, EEG.EVENTLIST.eventinfo.bepoch)
%
% FORMAT   :
%
% EEG = pop_syncroartifacts(EEG,direction)
%
%
% INPUTS   :
%
% EEG           - epoched dataset
% 'Direction'     'erplab2eeglab' - erplab to eeglab synchro
%                 'eeglab2erplab' - eeglab to erp
    
function EEG = synchroner3(EEG, isRT)

%
% eeglab <--> erplab synchro (bidirectional: This function only performs marking, not unmarking)
%
nepoch = EEG.trials;

%
% Step 1
% eeglab to erplab synchro by info at EEGLAB's artifact rejection fields
%

% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% 'rejjp' 'rejkurt' 'rejmanual' 'rejthresh' 'rejconst' 'rejfreq'...
% 'icarejjp' 'icarejkurt' 'icarejmanual' 'icarejthresh' 'icarejconst'...
% 'icarejfreq' 'rejglobal'
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
F = fieldnames(EEG.reject);
sfields1 = regexpi(F, '\w*E$', 'match');
sfields2 = [sfields1{:}];
arfields  = regexprep(sfields2,'E',''); % EEGLAB's artifact rejection fields

indx = [];
for i=1:length(arfields)
        if ~isempty(EEG.reject.(arfields{i}))
                indx = [indx i];
        end