code: def schaffer(x: float) -> Tuple[float, float]:
      f1 = np.square(x)
      f2 = np.square(np.sqrt(f1) - 2)
  
      return f1, f2
  
file_path: SMAC3/examples/3_multi_objective/1_schaffer.py
imports: from __future__ import annotations
  from typing import Dict, Tuple
  import numpy
  from ConfigSpace import Configuration, ConfigurationSpace
  from matplotlib import pyplot
  from smac import HyperparameterOptimizationFacade
  from smac import Scenario
  from smac.facade import AbstractFacade
label_desc: Use image node_id 1 for calling a global function with example usage: schaffer(x) and returns: f1,  f2