code: def cmd_slow_requests(self):
          
          slow_requests = [
              line.time_wait_response
              for line in self._valid_lines
              if line.time_wait_response > 1000
          ]
          return slow_requests
docs: List all requests that took a certain amount of time to be
          processed.
  
          .. warning::
             By now hardcoded to 1 second (1000 milliseconds), improve the
             command line interface to allow to send parameters to each command
             or globally.