docs: def is_endpoint_expecting(self, endpoint, *arguments):
          """Iterate over all rules and check if the endpoint expects
          the arguments provided.  This is for example useful if you have
          some URLs that expect a language code and others that do not and
          you want to wrap the builder a bit so that the current language
          code is automatically added if not provided but endpoints expect
          it.
  
          :param endpoint: the endpoint to check.
          :param arguments: this function accepts one or more arguments
                            as positional arguments.  Each one of them is
                            checked.
          """
          self.update()
          arguments = set(arguments)
          for rule in self._rules_by_endpoint[endpoint]:
              if arguments.issubset(rule.arguments):
                  return True
          return False