code: def GetSources(self, event):
      
      if self.DATA_TYPE != event.data_type:
        raise errors.WrongFormatter('Unsupported data type: {0:s}.'.format(
            event.data_type))
  
      return self.SOURCE_SHORT, self.SOURCE_LONG
docs: Determines the the short and long source for an event object.
  
      Args:
        event (EventObject): event.
  
      Returns:
        tuple(str, str): short and long source string.
  
      Raises:
        WrongFormatter: if the event object cannot be formatted by the formatter.