where the parameter ‘n_iter’ affects in the minimize() function

[nudtfuruigang]

Excuse me, but I wonder where the parameter ‘n_iter’ affects in the minimize() function.

if self.use_pbar and not verbose:
    self._create_pbar(n_iter)
    self.pbar.start()
    res = minimize(style_optfn, img0.flatten(), **minfn_args).nit
    self.pbar.finish()
else:
    res = minimize(style_optfn, img0.flatten(), **minfn_args).nit
return res

In these codes, n_iter is used to create pbar, and n_iter enters the ‘style_optfn’ function as an options parameter, but in the definition of

style_optfn(x, net, weights, layers, reprs, ratio)

there is no iteration option.
Does anyone have ideas? Thank you!