You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: action_controller_live_rum_test.rb
    path of file: ./repos/newrelic-ruby-agent/test/multiverse/suites/rails
    
    the code of the file until where you have to start completion: # This file is distributed under New Relic's license terms.
# See https://github.
    
    def test_excludes_rum_instrumentation_when_streaming_with_action_stream_true
      get('/undead/brain_stream', env: {'HTTP_VERSION' => 'HTTP/1.1'})

      assert_predicate(response, :ok?, 'Expected ActionController streaming response to be OK')
      assert_includes(response.body, UndeadController::RESPONSE_BODY)
      assert_not_includes(response.body, JS_LOADER)
    end