new_contents: import json
  
  import weblab.core.coordinator.coordinator as Coordinator
  import weblab.experiment.level as level
  
  from weblab.experiment.experiment import Experiment
  
  class StorageExperiment(Experiment):
      def __init__(self, coord_address, locator, config, *args, **kwargs):
          super(StorageExperiment, self).__init__(*args, **kwargs)
          self.commands = []
  
      def do_start_experiment(self, client_initial_data, server_initial_data):
          return "{}"
  
      def do_get_api(self):
          return level.level_2
  
      def do_send_command_to_device(self, command):
          self.commands.append(command)
          print command
          return command
  
      def clear(self):
          self.commands = []
  
      def do_dispose(self):
          return json.dumps({ Coordinator.FINISH_FINISHED_MESSAGE : True, Coordinator.FINISH_DATA_MESSAGE : ""})
  
  
subject: Add dummy experiment for testing