code: def setUp(self):
      self.handle = amp.init(enabled=True)
      common_init(self)
  
imports: import unittest
  from apex import amp
  import random
  import torch
  from torch import nn
  from utils import common_init, HALF
label_desc: Use image node_id 1 for calling the TestRnns obj's underlying member method code with example usage: obj.setUp() without return types