docs: def reverse_transform(self, col):
          """Converts data back into original format.
  
          Args:
              col(pandas.DataFrame): Data to transform.
  
          Returns:
              pandas.DataFrame
          """
  
          output = pd.DataFrame(index=col.index)
          output[self.col_name] = col.apply(self.safe_round, axis=1)
  
          if self.subtype == 'int':
              output[self.col_name] = output[self.col_name].astype(int)
  
          return output