code: def _get_ptr_details(self, device, device_type):
          
          context = self.api.identity
          region = self.api.region_name
          if device_type.lower().startswith("load"):
              ep = pyrax._get_service_endpoint(context, "load_balancer", region)
              svc = "loadbalancers"
              svc_name = "cloudLoadBalancers"
          else:
              ep = pyrax._get_service_endpoint(context, "compute", region)
              svc = "servers"
              svc_name = "cloudServersOpenStack"
          href = "%s/%s/%s" % (ep, svc, utils.get_id(device))
          return (href, svc_name)
docs: Takes a device and device type and returns the corresponding HREF link
          and service name for use with PTR record management.