code: def get_limits(self):
          
          if not self.limits:
              self.limits = {}
              for item in [self.MAX_RRSETS_BY_ZONE,
                           self.MAX_VPCS_ASSOCIATED_BY_ZONE]:
                  self.limits[item["name"]] = AwsLimit(
                      item["name"],
                      self,
                      item["default_limit"],
                      self.warning_threshold,
                      self.critical_threshold,
                      limit_type='AWS::Route53::HostedZone',
                      limit_subtype=item["name"]
                  )
  
          return self.limits
docs: Return all known limits for this service, as a dict of their names
          to :py:class:`~.AwsLimit` objects.
  
          Limits from:
          docs.aws.amazon.com/Route53/latest/DeveloperGuide/DNSLimitations.html
  
          :returns: dict of limit names to :py:class:`~.AwsLimit` objects
          :rtype: dict