code: def step(self):
      self.optimizer.step()
      self.scheduler.step()
  
file_path: jiant/jiant/shared/model_setup.py
imports: import transformers
  import torch
  from jiant.ext.radam import RAdam
label_desc: Use image node_id 2 for calling the OptimizerScheduler obj's underlying member method code with example usage: obj.step() without return types