code: def add_rules(self, rules: _RuleList) -> None:
          
          for rule in rules:
              if isinstance(rule, (tuple, list)):
                  assert len(rule) in (2, 3, 4)
                  if isinstance(rule[0], basestring_type):
                      rule = Rule(PathMatches(rule[0]), *rule[1:])
                  else:
                      rule = Rule(*rule)
  
              self.rules.append(self.process_rule(rule))
docs: Appends new rules to the router.
  
          :arg rules: a list of Rule instances (or tuples of arguments, which are
              passed to Rule constructor).