code: def media(self):
          
          media_list = []
          media_list.append(super(SuperFormMixin, self).media)
          for composite_name in self.composite_fields.keys():
              form = self.get_composite_field_value(composite_name)
              media_list.append(form.media)
          return reduce(lambda a, b: a + b, media_list)
docs: Incooperate composite field's media.