code: def testNoGarbage(self):
      device0 = device_util.canonicalize("/cpu:0")
      device1 = device_util.canonicalize("/cpu:1")
  
      with ops.device(device0):
          v0 = resource_variable_ops.ResourceVariable(1.0)
      with ops.device(device1):
          v1 = resource_variable_ops.ResourceVariable(2.0)
  
      packed_var = (
          packed_distributed_variable.PackedDistributedVariable(
              [v0, v1]
          )
      )
      # This needs a workaround to avoid creating reference cycles if the
      # attribute doesn't exist.
      hasattr(packed_var.on_device("/cpu:0"), "nonexist")
  
file_path: tensorflow/tensorflow/python/distribute/packed_distributed_variable_test.py
imports: from tensorflow.python.distribute import device_util
  from tensorflow.python.distribute import packed_distributed_variable
  from tensorflow.python.eager import context
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import config
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import resource_variable_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 4 for calling the PackedDistributedVariableTest obj's underlying member method code with example usage: obj.testNoGarbage() without return types