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: plotSmoothInterp.m
    path of file: ./repos/Performance-Estimation-Toolbox/PESTO_files/Auxiliary Functions
    
    the code of the file until where you have to start completion: function plotSmoothInterp(F,L)
% TODO: faire avec mu aussi
% TODO changer longueur des tangentes
if nargin<2
    L=1;
end

    
function plotSmoothInterp(F,L)
% TODO: faire avec mu aussi
% TODO changer longueur des tangentes
if nargin<2
    L=1;
end
tags = F.GetTags();
n = length(tags);
if n == 0
    fprintf('No tags found ; only tagged points can be plotted.\n');
    return;
end