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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 GetEvents(self):
 """Retrieves the events. Yield: EventObject: event. """

    for event in self._GetAttributeContainers('event'):
      if hasattr(event, 'event_data_row_identifier'):
        event_data_identifier = identifiers.SQLTableIdentifier(
            'event_data', event.event_data_row_identifier)
        event.SetEventDataIdentifier(event_data_identifier)

        del event.event_data_row_identifier

      yield event