code: def calculate_vector(self, data: List[pd.Series]) -> pd.Series:
      return pd.DataFrame(data).T.fillna(0).mean(axis=1)
  
file_path: upgini/src/upgini/autofe/vector.py
imports: from typing import List
  import pandas
  from upgini.autofe.operand import PandasOperand
label_desc: Use image node_id 1 for calling the Mean obj's underlying member method code with example usage: obj.calculate_vector(data) and returns: pd