code: def get_form(self, step=None, data=None, files=None):
          
          if step is None:
              step = self.steps.current
          # prepare the kwargs for the form instance.
          kwargs = self.get_form_kwargs(step)
          kwargs.update({
              'data': data,
              'files': files,
              'prefix': self.get_form_prefix(step, self.form_list[step]),
              'initial': self.get_form_initial(step),
          })
          if issubclass(self.form_list[step], forms.ModelForm):
              # If the form is based on ModelForm, add instance if available.
              kwargs.update({'instance': self.get_form_instance(step)})
          elif issubclass(self.form_list[step], forms.models.BaseModelFormSet):
              # If the form is based on ModelFormSet, add queryset if available.
              kwargs.update({'queryset': self.get_form_instance(step)})
          return self.form_list[step](**kwargs)
docs: Constructs the form for a given `step`. If no `step` is defined, the
          current step will be determined automatically.
  
          The form will be initialized using the `data` argument to prefill the
          new form. If needed, instance or queryset (for `ModelForm` or
          `ModelFormSet`) will be added too.