docs: def path_helper(self, path=None, operations=None, **kwargs):
          """
              Works like a apispec plugin
              May return a path as string and mutate operations dict.
  
          :param str path: Path to the resource
          :param dict operations: A `dict` mapping HTTP methods to operation object. See
              https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.2.md#operationObject
          :param kwargs:
          :return: Return value should be a string or None. If a string is returned, it
          is set as the path.
          """
          RE_URL = re.compile(r"<(?:[^:<>]+:)?([^<>]+)>")
          path = RE_URL.sub(r"{\1}", path)
          return "/{}{}".format(self.resource_name, path)