code: def get_cleaned_data_for_step(self, step):
          
          if step in self.form_list:
              form_obj = self.get_form(step=step,
                  data=self.storage.get_step_data(step),
                  files=self.storage.get_step_files(step))
              if form_obj.is_valid():
                  return form_obj.cleaned_data
          return None
docs: Returns the cleaned data for a given `step`. Before returning the
          cleaned data, the stored values are being revalidated through the
          form. If the data doesn't validate, None will be returned.