How to get uncertainty in peak location from HENzsearch

[paulray]

When I run HENzsearch with --fit-candidates, I see that I can get the parameters of the SincSquareModel by using

In [15]: efperiod = load_folding('cleanfilt_bary_nicer_xti_Z2n.nc')  
In [16]: efperiod.best_fits                                                                                                                               
Out[16]: [<SincSquareModel(amplitude=116321.52283363, mean=0.10777897, width=0.0000043)>]

This give the best fit frequency and the width of the sinc function. It would be nice if there were a way to easily get the uncertainty in the frequency determination. Can that be included somehow? Is that one of the outputs the fitter could return?