code: def path_placeholders(self):
          
  
          parser = string.Formatter()
          return [placeholder_name for _, placeholder_name, _, _ in parser.parse(self.path) if placeholder_name]
docs: The formattable placeholders from this endpoint's path, in the order they appear.
  
          Example:
  
              >>> endpoint = Endpoint(path='/api/{foo}/{bar}')
              >>> endpoint.path_placeholders
              ['foo', 'bar']