class_docstr: Scales original step reward by a multiplicative scaling factor.
  
  :param env: The underlying environment.
  :param scale: Multiplicative reward scaling factor.
docstr: Scales the original reward.
  
  :param reward: The original reward.
  :return: The scaled reward.
code: def reward(self, reward: float) -> float:
      """Scales the original reward.
  
      :param reward: The original reward.
      :return: The scaled reward.
      """
      return reward * self.scale
  
file_path: maze/maze/core/wrappers/reward_scaling_wrapper.py
imports: from maze.core.annotations import override
  from maze.core.env.maze_env import MazeEnv
  from maze.core.env.simulated_env_mixin import SimulatedEnvMixin
  from maze.core.wrappers.wrapper import RewardWrapper
label_desc: Use image node_id 2 for calling the RewardScalingWrapper obj's underlying member method code with example usage: obj.reward(reward) and returns: unknown