# File lib/new_relic/agent/instrumentation/action_controller_subscriber.rb, line 69
        def initialize(name, start, ending, transaction_id, payload, request)
          # We have a different initialize parameter list, so be explicit
          super(name, start, ending, transaction_id, payload)

          @request = request
          @controller_class = payload[:controller].split('::') \
            .inject(Object){|m,o| m.const_get(o)}

          if request && request.respond_to?(:env)
            @queue_start = QueueTime.parse_frontend_timestamp(request.env, self.time)
          end
        end