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: f_checkerpsets.m
    path of file: ./repos/erplab/studio_functions/Functions/EStudio/ERP Tab
    
    the code of the file until where you have to start completion: % PURPOSE :  Checking if the number of bin
    
function is part of ERP Studio Toolbox***
% Author: Guanghui ZHANG & Steven Luck
% Center for Mind and Brain
% University of California, Davis,
% Davis, CA, USA
% Feb. 2022



function chkerp = f_checkerpsets(ALLERP,indexerp)

chkerp = [0 0 0 0 0 0 0]; % no problem

if nargin <1
    help f_checkerpsets
    return;
end