code: def gamma(self) -> float:
      return self.rl_parameters.gamma
  
file_path: ReAgent/reagent/training/rl_trainer_pytorch.py
imports: import logging
  from typing import Optional
  from reagent.core.parameters import RLParameters
label_desc: Use image node_id 1 for calling the RLTrainerMixin obj's underlying member method code with example usage: obj.gamma() and returns: self