old_contents: # Implement this interface
  # to serve as a driver for analytics
  
  class DashboardStatistics(dict):
      def __init__(self):
          self['stat_list'] = []
          self['average'] = 0
          self['sum'] = 0
          self['unit'] = 'units'
          # stat_list is a list of dicts
          # [ {'timestamp': datetime, 'value': value} ]
  
  
  class MonitorDriver:
      def __init__(self):
          pass
  
      def get_meter(self, meter_name, obj, pk, credentials=None):
          pass
  
new_contents: # Implement this interface
  # to serve as a driver for analytics
  
  class DashboardStatistics(dict):
      def __init__(self):
          self['stat_list'] = []
          self['average'] = 0
          self['sum'] = 0
          self['unit'] = 'units'
          self['stat_list']=[]
          # stat_list is a list of dicts
          # [ {'timestamp': datetime, 'value': value} ]
  
  
  class MonitorDriver:
      def __init__(self):
          pass
  
      def get_meter(self, meter_name, obj, pk, credentials=None):
          pass
  
subject: Update to monitor driver