code: def parse(self):
          
          super(AcisIO, self).parse()
  
          # This is more of a "mapping" step than a "parsing" step, but mappers
          # only allow one-to-one mapping from input fields to output fields.
          for row in self.data:
              if 'meta' in row:
                  row = row['meta']
              if 'll' in row:
                  row['longitude'], row['latitude'] = row['ll']
                  del row['ll']
docs: Convert ACIS 'll' value into separate latitude and longitude.