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: test_headmodel_concentricspheres.m
    path of file: ./repos/fieldtrip/test
    
    the code of the file until where you have to start completion: function test_headmodel_concentricspheres

% MEM 1gb
% WALLTIME 00:10:00
% DEPENDENCY ft_headmodel_concentricspheres ft_prepare_vol_sens ft_compute_leadfield

    
function test_headmodel_concentricspheres

% MEM 1gb
% WALLTIME 00:10:00
% DEPENDENCY ft_headmodel_concentricspheres ft_prepare_vol_sens ft_compute_leadfield
% DATA no

% generate some random points
pnt = randn(101,3);
for i=1:length(pnt)
  pnt(i,:) = 100*pnt(i,:) / norm(pnt(i,:));
end