code: def get_target_success_rate(self) -> float:
      return self.target_success_rate
  
imports: import os
  from enum import Enum
  from os import path, environ
  from typing import Union, List
  import numpy
  from rl_coach.base_parameters import VisualizationParameters
  from rl_coach.environments.environment import Environment, EnvironmentParameters, LevelSelection
  from rl_coach.filters.action.full_discrete_action_space_map import FullDiscreteActionSpaceMap
  from rl_coach.filters.filter import InputFilter, OutputFilter
  from rl_coach.filters.observation.observation_rescale_to_size_filter import ObservationRescaleToSizeFilter
  from rl_coach.filters.observation.observation_rgb_to_y_filter import ObservationRGBToYFilter
  from rl_coach.filters.observation.observation_stacking_filter import ObservationStackingFilter
  from rl_coach.filters.observation.observation_to_uint8_filter import ObservationToUInt8Filter
  from rl_coach.spaces import MultiSelectActionSpace, ImageObservationSpace, VectorObservationSpace, StateSpace
label_desc: Use image node_id 6 for calling the DoomEnvironment obj's underlying member method code with example usage: obj.get_target_success_rate() and returns: self