code: def build(self):
          
          for detail_view in self.detail_views:
              view = self._get_view(detail_view)
              view().build_object(self)
          self._build_extra()
          self._build_related()
docs: Iterates through the views pointed to by self.detail_views, runs
          build_object with `self`, and calls _build_extra()
          and _build_related().