code: def calculate_unary(self, data: pd.Series) -> pd.Series:
      pass
  
imports: from pydantic import BaseModel
  from typing import Dict, List, Optional, Tuple, Union
  import abc
  import pandas
  import numpy
label_desc: Use image node_id 2 for calling the PandasOperand obj's underlying member method code with example usage: obj.calculate_unary(data) without return types