    # File lib/fog/rackspace/models/dns/callback.rb, line 9
            def wait_for_job(job_id, timeout=Fog.timeout, interval=1)
              retries = 5
              response = nil
              Fog.wait_for(timeout, interval) do
                response = service.callback job_id
                if response.body['status'] == 'COMPLETED'
                  true
                elsif response.body['status'] == 'ERROR'
                  raise Fog::DNS::Rackspace::CallbackError.new(response)
                elsif retries == 0
                  raise Fog::Errors::Error.new("Wait on job #{job_id} took too long")
                else
                  retries -= 1
                  false
                end
              end
              response
            end