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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def ExamineEvent(self, mediator, event):
 """Analyzes an event and creates Windows Services as required. At present, this method only handles events extracted from the Registry. Args: mediator (AnalysisMediator):
 mediates interactions between analysis plugins and other components, such as storage and dfvfs. event (EventObject):
 event to examine. """

    # TODO: Handle event log entries here also (ie, event id 4697).
    event_data_type = getattr(event, 'data_type', '')
    if event_data_type == 'windows:registry:service':
      # Create and store the service.
      service = WindowsService.FromEvent(event)
      self._service_collection.AddService(service)