code: def __init__(self, constant: float) -> None:
      super().__init__()
      self._constant = constant
  
file_path: optuna/tests/terminator_tests/test_terminator.py
imports: from __future__ import annotations
  import pytest
  from optuna.study._study_direction import StudyDirection
  from optuna.study.study import create_study
  from optuna.terminator import BaseImprovementEvaluator
  from optuna.terminator import StaticErrorEvaluator
  from optuna.terminator import Terminator
  from optuna.terminator.improvement.evaluator import BestValueStagnationEvaluator
  from optuna.trial import FrozenTrial
label_desc: Use image node_id 1 to create a new _StaticImprovementEvaluator object from inherited base classes: BaseImprovementEvaluator with example: obj = _StaticImprovementEvaluator(constant)