docs: def custom_template_name(self):
          """
          Returns the path for the custom special coverage template we want.
          """
          base_path = getattr(settings, "CUSTOM_SPECIAL_COVERAGE_PATH", "special_coverage/custom")
          if base_path is None:
              base_path = ""
          return "{0}/{1}_custom.html".format(
              base_path, self.slug.replace("-", "_")
          ).lstrip("/")