code: def restore(self, save_path, filename):
      fluid.io.load_params(
          self.fluid_executor, save_path, self.predict_program, filename
      )
  
file_path: PARL/examples/NeurIPS2020-Learning-to-Run-a-Power-Network-Challenge/track1/es_agent.py
imports: import parl
  import paddle.fluid
  from parl import layers
  import numpy
  from utils import FeatureProcessor, UnitaryFeatureProcessor
label_desc: Use image node_id 4 for calling the CombineESAgent obj's underlying member method code with example usage: obj.restore(save_path, filename) without return types